Home / 10,129.68-15,123.78-8,741.52

Finding the Fourth Proportional to 10,129.68, 15,123.78 and 8,741.52

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Solution

The fourth proportional to 10,129.68, 15,123.78 and 8,741.52 is: 13,051.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.68 : 15,123.78 = 8,741.52 : x
  2. Step 2: Convert to fraction form
    10,129.68/15,123.78 = 8,741.52/x
  3. Step 3: Cross multiply
    10,129.68x = 15,123.78 × 8,741.52
  4. Step 4: Simplify right side
    10,129.68x = 132,204,825.35
  5. Step 5: Solve for x
    x = 132,204,825.35/10,129.68
  6. Step 6: Final answer
    x = 13,051.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.