Home / 12,728.38-19,079.54-5,337.12

Finding the Fourth Proportional to 12,728.38, 19,079.54 and 5,337.12

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Solution

The fourth proportional to 12,728.38, 19,079.54 and 5,337.12 is: 8,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.38 : 19,079.54 = 5,337.12 : x
  2. Step 2: Convert to fraction form
    12,728.38/19,079.54 = 5,337.12/x
  3. Step 3: Cross multiply
    12,728.38x = 19,079.54 × 5,337.12
  4. Step 4: Simplify right side
    12,728.38x = 101,829,794.52
  5. Step 5: Solve for x
    x = 101,829,794.52/12,728.38
  6. Step 6: Final answer
    x = 8,000.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.