Home / 18,470.28-25,489.08-10,086.78

Finding the Fourth Proportional to 18,470.28, 25,489.08 and 10,086.78

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Solution

The fourth proportional to 18,470.28, 25,489.08 and 10,086.78 is: 13,919.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,470.28 : 25,489.08 = 10,086.78 : x
  2. Step 2: Convert to fraction form
    18,470.28/25,489.08 = 10,086.78/x
  3. Step 3: Cross multiply
    18,470.28x = 25,489.08 × 10,086.78
  4. Step 4: Simplify right side
    18,470.28x = 257,102,742.36
  5. Step 5: Solve for x
    x = 257,102,742.36/18,470.28
  6. Step 6: Final answer
    x = 13,919.81

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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.