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Finding the Fourth Proportional to 22,107.71, 30,511.77 and 12,549.95

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Solution

The fourth proportional to 22,107.71, 30,511.77 and 12,549.95 is: 17,320.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,107.71 : 30,511.77 = 12,549.95 : x
  2. Step 2: Convert to fraction form
    22,107.71/30,511.77 = 12,549.95/x
  3. Step 3: Cross multiply
    22,107.71x = 30,511.77 × 12,549.95
  4. Step 4: Simplify right side
    22,107.71x = 382,921,035.35
  5. Step 5: Solve for x
    x = 382,921,035.35/22,107.71
  6. Step 6: Final answer
    x = 17,320.70

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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.