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Finding the Fourth Proportional to 21,608.79, 32,425.48 and 17,253.92

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Solution

The fourth proportional to 21,608.79, 32,425.48 and 17,253.92 is: 25,890.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,608.79 : 32,425.48 = 17,253.92 : x
  2. Step 2: Convert to fraction form
    21,608.79/32,425.48 = 17,253.92/x
  3. Step 3: Cross multiply
    21,608.79x = 32,425.48 × 17,253.92
  4. Step 4: Simplify right side
    21,608.79x = 559,466,637.88
  5. Step 5: Solve for x
    x = 559,466,637.88/21,608.79
  6. Step 6: Final answer
    x = 25,890.70

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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.