Home / 12,728.40-19,079.52-5,337.12

Finding the Fourth Proportional to 12,728.40, 19,079.52 and 5,337.12

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Solution

The fourth proportional to 12,728.40, 19,079.52 and 5,337.12 is: 8,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.40 : 19,079.52 = 5,337.12 : x
  2. Step 2: Convert to fraction form
    12,728.40/19,079.52 = 5,337.12/x
  3. Step 3: Cross multiply
    12,728.40x = 19,079.52 × 5,337.12
  4. Step 4: Simplify right side
    12,728.40x = 101,829,687.78
  5. Step 5: Solve for x
    x = 101,829,687.78/12,728.40
  6. Step 6: Final answer
    x = 8,000.20

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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.