Home / 14,929.97-20,604.20-8,215.75

Finding the Fourth Proportional to 14,929.97, 20,604.20 and 8,215.75

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Solution

The fourth proportional to 14,929.97, 20,604.20 and 8,215.75 is: 11,338.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,929.97 : 20,604.20 = 8,215.75 : x
  2. Step 2: Convert to fraction form
    14,929.97/20,604.20 = 8,215.75/x
  3. Step 3: Cross multiply
    14,929.97x = 20,604.20 × 8,215.75
  4. Step 4: Simplify right side
    14,929.97x = 169,278,956.15
  5. Step 5: Solve for x
    x = 169,278,956.15/14,929.97
  6. Step 6: Final answer
    x = 11,338.20

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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.