Home / 10,345.38-15,520.49-3,419.88

Finding the Fourth Proportional to 10,345.38, 15,520.49 and 3,419.88

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Solution

The fourth proportional to 10,345.38, 15,520.49 and 3,419.88 is: 5,130.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.38 : 15,520.49 = 3,419.88 : x
  2. Step 2: Convert to fraction form
    10,345.38/15,520.49 = 3,419.88/x
  3. Step 3: Cross multiply
    10,345.38x = 15,520.49 × 3,419.88
  4. Step 4: Simplify right side
    10,345.38x = 53,078,213.34
  5. Step 5: Solve for x
    x = 53,078,213.34/10,345.38
  6. Step 6: Final answer
    x = 5,130.62

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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.