Home / 20,387,305.27-28,130,402.95-11,688,206.59

Finding the Fourth Proportional to 20,387,305.27, 28,130,402.95 and 11,688,206.59

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Solution

The fourth proportional to 20,387,305.27, 28,130,402.95 and 11,688,206.59 is: 16,127,386.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387,305.27 : 28,130,402.95 = 11,688,206.59 : x
  2. Step 2: Convert to fraction form
    20,387,305.27/28,130,402.95 = 11,688,206.59/x
  3. Step 3: Cross multiply
    20,387,305.27x = 28,130,402.95 × 11,688,206.59
  4. Step 4: Simplify right side
    20,387,305.27x = 328,793,961,139,545.44
  5. Step 5: Solve for x
    x = 328,793,961,139,545.44/20,387,305.27
  6. Step 6: Final answer
    x = 16,127,386.96

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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.