Home / 21,726-29,981.88-12,294.59

Finding the Fourth Proportional to 21,726, 29,981.88 and 12,294.59

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Solution

The fourth proportional to 21,726, 29,981.88 and 12,294.59 is: 16,966.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726 : 29,981.88 = 12,294.59 : x
  2. Step 2: Convert to fraction form
    21,726/29,981.88 = 12,294.59/x
  3. Step 3: Cross multiply
    21,726x = 29,981.88 × 12,294.59
  4. Step 4: Simplify right side
    21,726x = 368,614,772.12
  5. Step 5: Solve for x
    x = 368,614,772.12/21,726
  6. Step 6: Final answer
    x = 16,966.53

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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.