Home / 20,689,858.92-28,552,891.08-11,522,501.70

Finding the Fourth Proportional to 20,689,858.92, 28,552,891.08 and 11,522,501.70

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Solution

The fourth proportional to 20,689,858.92, 28,552,891.08 and 11,522,501.70 is: 15,901,545.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,858.92 : 28,552,891.08 = 11,522,501.70 : x
  2. Step 2: Convert to fraction form
    20,689,858.92/28,552,891.08 = 11,522,501.70/x
  3. Step 3: Cross multiply
    20,689,858.92x = 28,552,891.08 × 11,522,501.70
  4. Step 4: Simplify right side
    20,689,858.92x = 329,000,736,009,214.81
  5. Step 5: Solve for x
    x = 329,000,736,009,214.81/20,689,858.92
  6. Step 6: Final answer
    x = 15,901,545.65

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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.