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Finding the Fourth Proportional to 18,087.71, 24,906.79 and 15,098.40

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Solution

The fourth proportional to 18,087.71, 24,906.79 and 15,098.40 is: 20,790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087.71 : 24,906.79 = 15,098.40 : x
  2. Step 2: Convert to fraction form
    18,087.71/24,906.79 = 15,098.40/x
  3. Step 3: Cross multiply
    18,087.71x = 24,906.79 × 15,098.40
  4. Step 4: Simplify right side
    18,087.71x = 376,052,697.01
  5. Step 5: Solve for x
    x = 376,052,697.01/18,087.71
  6. Step 6: Final answer
    x = 20,790.51

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1.5x scale

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.