Home / 18,767.28-25,898.09-11,217.78

Finding the Fourth Proportional to 18,767.28, 25,898.09 and 11,217.78

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Solution

The fourth proportional to 18,767.28, 25,898.09 and 11,217.78 is: 15,480.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.28 : 25,898.09 = 11,217.78 : x
  2. Step 2: Convert to fraction form
    18,767.28/25,898.09 = 11,217.78/x
  3. Step 3: Cross multiply
    18,767.28x = 25,898.09 × 11,217.78
  4. Step 4: Simplify right side
    18,767.28x = 290,519,019.95
  5. Step 5: Solve for x
    x = 290,519,019.95/18,767.28
  6. Step 6: Final answer
    x = 15,480.08

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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.