Home / 21,685.24-29,924.25-12,125.91

Finding the Fourth Proportional to 21,685.24, 29,924.25 and 12,125.91

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Solution

The fourth proportional to 21,685.24, 29,924.25 and 12,125.91 is: 16,732.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.24 : 29,924.25 = 12,125.91 : x
  2. Step 2: Convert to fraction form
    21,685.24/29,924.25 = 12,125.91/x
  3. Step 3: Cross multiply
    21,685.24x = 29,924.25 × 12,125.91
  4. Step 4: Simplify right side
    21,685.24x = 362,858,832.61
  5. Step 5: Solve for x
    x = 362,858,832.61/21,685.24
  6. Step 6: Final answer
    x = 16,732.99

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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.