Home / 28,421,044,201.20-39,219,487,167.60-15,558,195,835.20

Finding the Fourth Proportional to 28,421,044,201.20, 39,219,487,167.60 and 15,558,195,835.20

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Solution

The fourth proportional to 28,421,044,201.20, 39,219,487,167.60 and 15,558,195,835.20 is: 21,469,459,657.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421,044,201.20 : 39,219,487,167.60 = 15,558,195,835.20 : x
  2. Step 2: Convert to fraction form
    28,421,044,201.20/39,219,487,167.60 = 15,558,195,835.20/x
  3. Step 3: Cross multiply
    28,421,044,201.20x = 39,219,487,167.60 × 15,558,195,835.20
  4. Step 4: Simplify right side
    28,421,044,201.20x = 610,184,461,909,634,187,264
  5. Step 5: Solve for x
    x = 610,184,461,909,634,187,264/28,421,044,201.20
  6. Step 6: Final answer
    x = 21,469,459,657.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.