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Finding the Fourth Proportional to 15,178.68, 20,959.02 and 10,454.76

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Solution

The fourth proportional to 15,178.68, 20,959.02 and 10,454.76 is: 14,436.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,178.68 : 20,959.02 = 10,454.76 : x
  2. Step 2: Convert to fraction form
    15,178.68/20,959.02 = 10,454.76/x
  3. Step 3: Cross multiply
    15,178.68x = 20,959.02 × 10,454.76
  4. Step 4: Simplify right side
    15,178.68x = 219,121,523.94
  5. Step 5: Solve for x
    x = 219,121,523.94/15,178.68
  6. Step 6: Final answer
    x = 14,436.14

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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.