Home / 10,126.28-13,972.42-5,649.92

Finding the Fourth Proportional to 10,126.28, 13,972.42 and 5,649.92

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Solution

The fourth proportional to 10,126.28, 13,972.42 and 5,649.92 is: 7,795.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,126.28 : 13,972.42 = 5,649.92 : x
  2. Step 2: Convert to fraction form
    10,126.28/13,972.42 = 5,649.92/x
  3. Step 3: Cross multiply
    10,126.28x = 13,972.42 × 5,649.92
  4. Step 4: Simplify right side
    10,126.28x = 78,943,055.21
  5. Step 5: Solve for x
    x = 78,943,055.21/10,126.28
  6. Step 6: Final answer
    x = 7,795.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.