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Finding the Fourth Proportional to 27,136.60, 40,704.90 and 17,319.40

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Solution

The fourth proportional to 27,136.60, 40,704.90 and 17,319.40 is: 25,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,136.60 : 40,704.90 = 17,319.40 : x
  2. Step 2: Convert to fraction form
    27,136.60/40,704.90 = 17,319.40/x
  3. Step 3: Cross multiply
    27,136.60x = 40,704.90 × 17,319.40
  4. Step 4: Simplify right side
    27,136.60x = 704,984,445.06
  5. Step 5: Solve for x
    x = 704,984,445.06/27,136.60
  6. Step 6: Final answer
    x = 25,979.10

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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.