Home / 21,932.40-30,266.88-12,109.95

Finding the Fourth Proportional to 21,932.40, 30,266.88 and 12,109.95

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Solution

The fourth proportional to 21,932.40, 30,266.88 and 12,109.95 is: 16,711.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.40 : 30,266.88 = 12,109.95 : x
  2. Step 2: Convert to fraction form
    21,932.40/30,266.88 = 12,109.95/x
  3. Step 3: Cross multiply
    21,932.40x = 30,266.88 × 12,109.95
  4. Step 4: Simplify right side
    21,932.40x = 366,530,252.12
  5. Step 5: Solve for x
    x = 366,530,252.12/21,932.40
  6. Step 6: Final answer
    x = 16,711.82

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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.