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Finding the Fourth Proportional to 21,777.88, 32,644.76 and 14,758.61

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Solution

The fourth proportional to 21,777.88, 32,644.76 and 14,758.61 is: 22,122.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.88 : 32,644.76 = 14,758.61 : x
  2. Step 2: Convert to fraction form
    21,777.88/32,644.76 = 14,758.61/x
  3. Step 3: Cross multiply
    21,777.88x = 32,644.76 × 14,758.61
  4. Step 4: Simplify right side
    21,777.88x = 481,791,281.38
  5. Step 5: Solve for x
    x = 481,791,281.38/21,777.88
  6. Step 6: Final answer
    x = 22,122.97

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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.