Home / 10,505.31-15,752.40-3,108.75

Finding the Fourth Proportional to 10,505.31, 15,752.40 and 3,108.75

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Solution

The fourth proportional to 10,505.31, 15,752.40 and 3,108.75 is: 4,661.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.31 : 15,752.40 = 3,108.75 : x
  2. Step 2: Convert to fraction form
    10,505.31/15,752.40 = 3,108.75/x
  3. Step 3: Cross multiply
    10,505.31x = 15,752.40 × 3,108.75
  4. Step 4: Simplify right side
    10,505.31x = 48,970,273.50
  5. Step 5: Solve for x
    x = 48,970,273.50/10,505.31
  6. Step 6: Final answer
    x = 4,661.48

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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.