Home / 10,478.08-15,720.20-4,234.92

Finding the Fourth Proportional to 10,478.08, 15,720.20 and 4,234.92

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Solution

The fourth proportional to 10,478.08, 15,720.20 and 4,234.92 is: 6,353.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.08 : 15,720.20 = 4,234.92 : x
  2. Step 2: Convert to fraction form
    10,478.08/15,720.20 = 4,234.92/x
  3. Step 3: Cross multiply
    10,478.08x = 15,720.20 × 4,234.92
  4. Step 4: Simplify right side
    10,478.08x = 66,573,789.38
  5. Step 5: Solve for x
    x = 66,573,789.38/10,478.08
  6. Step 6: Final answer
    x = 6,353.62

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1.5x scale

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.