Home / 10,513.38-15,765.30-3,115.26

Finding the Fourth Proportional to 10,513.38, 15,765.30 and 3,115.26

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Solution

The fourth proportional to 10,513.38, 15,765.30 and 3,115.26 is: 4,671.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,513.38 : 15,765.30 = 3,115.26 : x
  2. Step 2: Convert to fraction form
    10,513.38/15,765.30 = 3,115.26/x
  3. Step 3: Cross multiply
    10,513.38x = 15,765.30 × 3,115.26
  4. Step 4: Simplify right side
    10,513.38x = 49,113,008.48
  5. Step 5: Solve for x
    x = 49,113,008.48/10,513.38
  6. Step 6: Final answer
    x = 4,671.48

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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.