Home / 18,983.08-28,472.46-5,131

Finding the Fourth Proportional to 18,983.08, 28,472.46 and 5,131

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Solution

The fourth proportional to 18,983.08, 28,472.46 and 5,131 is: 7,695.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.08 : 28,472.46 = 5,131 : x
  2. Step 2: Convert to fraction form
    18,983.08/28,472.46 = 5,131/x
  3. Step 3: Cross multiply
    18,983.08x = 28,472.46 × 5,131
  4. Step 4: Simplify right side
    18,983.08x = 146,092,192.26
  5. Step 5: Solve for x
    x = 146,092,192.26/18,983.08
  6. Step 6: Final answer
    x = 7,695.92

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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.