Home / 12,939.30-17,854.68-7,273.26

Finding the Fourth Proportional to 12,939.30, 17,854.68 and 7,273.26

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Solution

The fourth proportional to 12,939.30, 17,854.68 and 7,273.26 is: 10,036.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.30 : 17,854.68 = 7,273.26 : x
  2. Step 2: Convert to fraction form
    12,939.30/17,854.68 = 7,273.26/x
  3. Step 3: Cross multiply
    12,939.30x = 17,854.68 × 7,273.26
  4. Step 4: Simplify right side
    12,939.30x = 129,861,729.86
  5. Step 5: Solve for x
    x = 129,861,729.86/12,939.30
  6. Step 6: Final answer
    x = 10,036.23

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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.