Home / 21,342.22-29,451.54-11,781.95

Finding the Fourth Proportional to 21,342.22, 29,451.54 and 11,781.95

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Solution

The fourth proportional to 21,342.22, 29,451.54 and 11,781.95 is: 16,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.22 : 29,451.54 = 11,781.95 : x
  2. Step 2: Convert to fraction form
    21,342.22/29,451.54 = 11,781.95/x
  3. Step 3: Cross multiply
    21,342.22x = 29,451.54 × 11,781.95
  4. Step 4: Simplify right side
    21,342.22x = 346,996,605.30
  5. Step 5: Solve for x
    x = 346,996,605.30/21,342.22
  6. Step 6: Final answer
    x = 16,258.70

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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.