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Finding the Fourth Proportional to 19,452.20, 29,178.30 and 17,839.40

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Solution

The fourth proportional to 19,452.20, 29,178.30 and 17,839.40 is: 26,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,452.20 : 29,178.30 = 17,839.40 : x
  2. Step 2: Convert to fraction form
    19,452.20/29,178.30 = 17,839.40/x
  3. Step 3: Cross multiply
    19,452.20x = 29,178.30 × 17,839.40
  4. Step 4: Simplify right side
    19,452.20x = 520,523,365.02
  5. Step 5: Solve for x
    x = 520,523,365.02/19,452.20
  6. Step 6: Final answer
    x = 26,759.10

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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.