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Finding the Fourth Proportional to 10,657.92, 15,998.40 and 7,737.60

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Solution

The fourth proportional to 10,657.92, 15,998.40 and 7,737.60 is: 11,614.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,657.92 : 15,998.40 = 7,737.60 : x
  2. Step 2: Convert to fraction form
    10,657.92/15,998.40 = 7,737.60/x
  3. Step 3: Cross multiply
    10,657.92x = 15,998.40 × 7,737.60
  4. Step 4: Simplify right side
    10,657.92x = 123,789,219.84
  5. Step 5: Solve for x
    x = 123,789,219.84/10,657.92
  6. Step 6: Final answer
    x = 11,614.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.