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Finding the Fourth Proportional to 18,470.52, 25,489.84 and 10,087.56

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Solution

The fourth proportional to 18,470.52, 25,489.84 and 10,087.56 is: 13,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.52 : 25,489.84 = 10,087.56 : x
  2. Step 2: Convert to fraction form
    18,470.52/25,489.84 = 10,087.56/x
  3. Step 3: Cross multiply
    18,470.52x = 25,489.84 × 10,087.56
  4. Step 4: Simplify right side
    18,470.52x = 257,130,290.39
  5. Step 5: Solve for x
    x = 257,130,290.39/18,470.52
  6. Step 6: Final answer
    x = 13,921.12

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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.