Home / 10,142.31-15,213.56-2,746.85

Finding the Fourth Proportional to 10,142.31, 15,213.56 and 2,746.85

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Solution

The fourth proportional to 10,142.31, 15,213.56 and 2,746.85 is: 4,120.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.31 : 15,213.56 = 2,746.85 : x
  2. Step 2: Convert to fraction form
    10,142.31/15,213.56 = 2,746.85/x
  3. Step 3: Cross multiply
    10,142.31x = 15,213.56 × 2,746.85
  4. Step 4: Simplify right side
    10,142.31x = 41,789,277.48
  5. Step 5: Solve for x
    x = 41,789,277.48/10,142.31
  6. Step 6: Final answer
    x = 4,120.29

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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.