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Finding the Fourth Proportional to 32,479.20, 44,821.12 and 18,138.20

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Solution

The fourth proportional to 32,479.20, 44,821.12 and 18,138.20 is: 25,030.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,479.20 : 44,821.12 = 18,138.20 : x
  2. Step 2: Convert to fraction form
    32,479.20/44,821.12 = 18,138.20/x
  3. Step 3: Cross multiply
    32,479.20x = 44,821.12 × 18,138.20
  4. Step 4: Simplify right side
    32,479.20x = 812,974,438.78
  5. Step 5: Solve for x
    x = 812,974,438.78/32,479.20
  6. Step 6: Final answer
    x = 25,030.62

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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.