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Finding the Fourth Proportional to 18,763.62, 25,864.02 and 14,778.42

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Solution

The fourth proportional to 18,763.62, 25,864.02 and 14,778.42 is: 20,370.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,763.62 : 25,864.02 = 14,778.42 : x
  2. Step 2: Convert to fraction form
    18,763.62/25,864.02 = 14,778.42/x
  3. Step 3: Cross multiply
    18,763.62x = 25,864.02 × 14,778.42
  4. Step 4: Simplify right side
    18,763.62x = 382,229,350.45
  5. Step 5: Solve for x
    x = 382,229,350.45/18,763.62
  6. Step 6: Final answer
    x = 20,370.77

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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.