Home / 10,320.64-15,478.20-4,475.88

Finding the Fourth Proportional to 10,320.64, 15,478.20 and 4,475.88

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Solution

The fourth proportional to 10,320.64, 15,478.20 and 4,475.88 is: 6,712.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,320.64 : 15,478.20 = 4,475.88 : x
  2. Step 2: Convert to fraction form
    10,320.64/15,478.20 = 4,475.88/x
  3. Step 3: Cross multiply
    10,320.64x = 15,478.20 × 4,475.88
  4. Step 4: Simplify right side
    10,320.64x = 69,278,565.82
  5. Step 5: Solve for x
    x = 69,278,565.82/10,320.64
  6. Step 6: Final answer
    x = 6,712.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.