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Finding the Fourth Proportional to 18,515.70, 25,553.34 and 10,560.42

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Solution

The fourth proportional to 18,515.70, 25,553.34 and 10,560.42 is: 14,574.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.70 : 25,553.34 = 10,560.42 : x
  2. Step 2: Convert to fraction form
    18,515.70/25,553.34 = 10,560.42/x
  3. Step 3: Cross multiply
    18,515.70x = 25,553.34 × 10,560.42
  4. Step 4: Simplify right side
    18,515.70x = 269,854,002.80
  5. Step 5: Solve for x
    x = 269,854,002.80/18,515.70
  6. Step 6: Final answer
    x = 14,574.33

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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.