Home / 21,491.68-29,659.92-12,060.88

Finding the Fourth Proportional to 21,491.68, 29,659.92 and 12,060.88

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Solution

The fourth proportional to 21,491.68, 29,659.92 and 12,060.88 is: 16,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.68 : 29,659.92 = 12,060.88 : x
  2. Step 2: Convert to fraction form
    21,491.68/29,659.92 = 12,060.88/x
  3. Step 3: Cross multiply
    21,491.68x = 29,659.92 × 12,060.88
  4. Step 4: Simplify right side
    21,491.68x = 357,724,735.93
  5. Step 5: Solve for x
    x = 357,724,735.93/21,491.68
  6. Step 6: Final answer
    x = 16,644.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.