Home / 20,407,823.21-28,161,733.15-12,672,700.67

Finding the Fourth Proportional to 20,407,823.21, 28,161,733.15 and 12,672,700.67

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Solution

The fourth proportional to 20,407,823.21, 28,161,733.15 and 12,672,700.67 is: 17,487,666.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,823.21 : 28,161,733.15 = 12,672,700.67 : x
  2. Step 2: Convert to fraction form
    20,407,823.21/28,161,733.15 = 12,672,700.67/x
  3. Step 3: Cross multiply
    20,407,823.21x = 28,161,733.15 × 12,672,700.67
  4. Step 4: Simplify right side
    20,407,823.21x = 356,885,214,644,611.44
  5. Step 5: Solve for x
    x = 356,885,214,644,611.44/20,407,823.21
  6. Step 6: Final answer
    x = 17,487,666.91

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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.