Home / 13,445.26-20,154.39-5,123.14

Finding the Fourth Proportional to 13,445.26, 20,154.39 and 5,123.14

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Solution

The fourth proportional to 13,445.26, 20,154.39 and 5,123.14 is: 7,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.26 : 20,154.39 = 5,123.14 : x
  2. Step 2: Convert to fraction form
    13,445.26/20,154.39 = 5,123.14/x
  3. Step 3: Cross multiply
    13,445.26x = 20,154.39 × 5,123.14
  4. Step 4: Simplify right side
    13,445.26x = 103,253,761.58
  5. Step 5: Solve for x
    x = 103,253,761.58/13,445.26
  6. Step 6: Final answer
    x = 7,679.57

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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.