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Finding the Fourth Proportional to 20,250.61, 27,934.20 and 12,178.69

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Solution

The fourth proportional to 20,250.61, 27,934.20 and 12,178.69 is: 16,799.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.61 : 27,934.20 = 12,178.69 : x
  2. Step 2: Convert to fraction form
    20,250.61/27,934.20 = 12,178.69/x
  3. Step 3: Cross multiply
    20,250.61x = 27,934.20 × 12,178.69
  4. Step 4: Simplify right side
    20,250.61x = 340,201,892.36
  5. Step 5: Solve for x
    x = 340,201,892.36/20,250.61
  6. Step 6: Final answer
    x = 16,799.59

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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.