Home / 28,420,187.52-39,220,079.94-15,690,293.04

Finding the Fourth Proportional to 28,420,187.52, 39,220,079.94 and 15,690,293.04

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Solution

The fourth proportional to 28,420,187.52, 39,220,079.94 and 15,690,293.04 is: 21,652,726.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420,187.52 : 39,220,079.94 = 15,690,293.04 : x
  2. Step 2: Convert to fraction form
    28,420,187.52/39,220,079.94 = 15,690,293.04/x
  3. Step 3: Cross multiply
    28,420,187.52x = 39,220,079.94 × 15,690,293.04
  4. Step 4: Simplify right side
    28,420,187.52x = 615,374,547,310,825.50
  5. Step 5: Solve for x
    x = 615,374,547,310,825.50/28,420,187.52
  6. Step 6: Final answer
    x = 21,652,726.50

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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.