Home / 15,061.38-20,785.41-9,399.48

Finding the Fourth Proportional to 15,061.38, 20,785.41 and 9,399.48

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Solution

The fourth proportional to 15,061.38, 20,785.41 and 9,399.48 is: 12,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,061.38 : 20,785.41 = 9,399.48 : x
  2. Step 2: Convert to fraction form
    15,061.38/20,785.41 = 9,399.48/x
  3. Step 3: Cross multiply
    15,061.38x = 20,785.41 × 9,399.48
  4. Step 4: Simplify right side
    15,061.38x = 195,372,045.59
  5. Step 5: Solve for x
    x = 195,372,045.59/15,061.38
  6. Step 6: Final answer
    x = 12,971.72

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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.