Home / 21,725.81-29,984.13-13,232.91

Finding the Fourth Proportional to 21,725.81, 29,984.13 and 13,232.91

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Solution

The fourth proportional to 21,725.81, 29,984.13 and 13,232.91 is: 18,262.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,725.81 : 29,984.13 = 13,232.91 : x
  2. Step 2: Convert to fraction form
    21,725.81/29,984.13 = 13,232.91/x
  3. Step 3: Cross multiply
    21,725.81x = 29,984.13 × 13,232.91
  4. Step 4: Simplify right side
    21,725.81x = 396,777,293.72
  5. Step 5: Solve for x
    x = 396,777,293.72/21,725.81
  6. Step 6: Final answer
    x = 18,262.95

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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.