Home / 21,251.40-32,003.61-18,511.17

Finding the Fourth Proportional to 21,251.40, 32,003.61 and 18,511.17

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Solution

The fourth proportional to 21,251.40, 32,003.61 and 18,511.17 is: 27,876.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.40 : 32,003.61 = 18,511.17 : x
  2. Step 2: Convert to fraction form
    21,251.40/32,003.61 = 18,511.17/x
  3. Step 3: Cross multiply
    21,251.40x = 32,003.61 × 18,511.17
  4. Step 4: Simplify right side
    21,251.40x = 592,424,265.32
  5. Step 5: Solve for x
    x = 592,424,265.32/21,251.40
  6. Step 6: Final answer
    x = 27,876.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.