Home / 14,930.20-20,604.42-8,215.76

Finding the Fourth Proportional to 14,930.20, 20,604.42 and 8,215.76

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Solution

The fourth proportional to 14,930.20, 20,604.42 and 8,215.76 is: 11,338.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,930.20 : 20,604.42 = 8,215.76 : x
  2. Step 2: Convert to fraction form
    14,930.20/20,604.42 = 8,215.76/x
  3. Step 3: Cross multiply
    14,930.20x = 20,604.42 × 8,215.76
  4. Step 4: Simplify right side
    14,930.20x = 169,280,998.06
  5. Step 5: Solve for x
    x = 169,280,998.06/14,930.20
  6. Step 6: Final answer
    x = 11,338.16

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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.