Home / 10,255.11-14,144.97-7,871.28

Finding the Fourth Proportional to 10,255.11, 14,144.97 and 7,871.28

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Solution

The fourth proportional to 10,255.11, 14,144.97 and 7,871.28 is: 10,856.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.11 : 14,144.97 = 7,871.28 : x
  2. Step 2: Convert to fraction form
    10,255.11/14,144.97 = 7,871.28/x
  3. Step 3: Cross multiply
    10,255.11x = 14,144.97 × 7,871.28
  4. Step 4: Simplify right side
    10,255.11x = 111,338,948.74
  5. Step 5: Solve for x
    x = 111,338,948.74/10,255.11
  6. Step 6: Final answer
    x = 10,856.93

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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.