Home / 10,086.40-15,131.88-5,648.51

Finding the Fourth Proportional to 10,086.40, 15,131.88 and 5,648.51

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Solution

The fourth proportional to 10,086.40, 15,131.88 and 5,648.51 is: 8,474.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,086.40 : 15,131.88 = 5,648.51 : x
  2. Step 2: Convert to fraction form
    10,086.40/15,131.88 = 5,648.51/x
  3. Step 3: Cross multiply
    10,086.40x = 15,131.88 × 5,648.51
  4. Step 4: Simplify right side
    10,086.40x = 85,472,575.50
  5. Step 5: Solve for x
    x = 85,472,575.50/10,086.40
  6. Step 6: Final answer
    x = 8,474.04

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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.