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Finding the Fourth Proportional to 18,349.20, 25,309.08 and 11,545.20

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Solution

The fourth proportional to 18,349.20, 25,309.08 and 11,545.20 is: 15,924.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,349.20 : 25,309.08 = 11,545.20 : x
  2. Step 2: Convert to fraction form
    18,349.20/25,309.08 = 11,545.20/x
  3. Step 3: Cross multiply
    18,349.20x = 25,309.08 × 11,545.20
  4. Step 4: Simplify right side
    18,349.20x = 292,198,390.42
  5. Step 5: Solve for x
    x = 292,198,390.42/18,349.20
  6. Step 6: Final answer
    x = 15,924.31

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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.