Home / 20,887,495.92-28,815,251.04-13,547,178.72

Finding the Fourth Proportional to 20,887,495.92, 28,815,251.04 and 13,547,178.72

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Solution

The fourth proportional to 20,887,495.92, 28,815,251.04 and 13,547,178.72 is: 18,688,949.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887,495.92 : 28,815,251.04 = 13,547,178.72 : x
  2. Step 2: Convert to fraction form
    20,887,495.92/28,815,251.04 = 13,547,178.72/x
  3. Step 3: Cross multiply
    20,887,495.92x = 28,815,251.04 × 13,547,178.72
  4. Step 4: Simplify right side
    20,887,495.92x = 390,365,355,700,545.88
  5. Step 5: Solve for x
    x = 390,365,355,700,545.88/20,887,495.92
  6. Step 6: Final answer
    x = 18,688,949.47

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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.