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Finding the Fourth Proportional to 21,642.74, 32,463.78 and 17,937.15

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Solution

The fourth proportional to 21,642.74, 32,463.78 and 17,937.15 is: 26,905.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,642.74 : 32,463.78 = 17,937.15 : x
  2. Step 2: Convert to fraction form
    21,642.74/32,463.78 = 17,937.15/x
  3. Step 3: Cross multiply
    21,642.74x = 32,463.78 × 17,937.15
  4. Step 4: Simplify right side
    21,642.74x = 582,307,502.42
  5. Step 5: Solve for x
    x = 582,307,502.42/21,642.74
  6. Step 6: Final answer
    x = 26,905.44

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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.