Home / 10,371.36-15,543.60-5,428.48

Finding the Fourth Proportional to 10,371.36, 15,543.60 and 5,428.48

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Solution

The fourth proportional to 10,371.36, 15,543.60 and 5,428.48 is: 8,135.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,371.36 : 15,543.60 = 5,428.48 : x
  2. Step 2: Convert to fraction form
    10,371.36/15,543.60 = 5,428.48/x
  3. Step 3: Cross multiply
    10,371.36x = 15,543.60 × 5,428.48
  4. Step 4: Simplify right side
    10,371.36x = 84,378,121.73
  5. Step 5: Solve for x
    x = 84,378,121.73/10,371.36
  6. Step 6: Final answer
    x = 8,135.69

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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.