Home / 20,781,373.96-28,677,063.54-11,488,389.85

Finding the Fourth Proportional to 20,781,373.96, 28,677,063.54 and 11,488,389.85

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Solution

The fourth proportional to 20,781,373.96, 28,677,063.54 and 11,488,389.85 is: 15,853,296.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,373.96 : 28,677,063.54 = 11,488,389.85 : x
  2. Step 2: Convert to fraction form
    20,781,373.96/28,677,063.54 = 11,488,389.85/x
  3. Step 3: Cross multiply
    20,781,373.96x = 28,677,063.54 × 11,488,389.85
  4. Step 4: Simplify right side
    20,781,373.96x = 329,453,285,700,741.06
  5. Step 5: Solve for x
    x = 329,453,285,700,741.06/20,781,373.96
  6. Step 6: Final answer
    x = 15,853,296.63

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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.