Home / 13,557.28-20,335.60-3,697.12

Finding the Fourth Proportional to 13,557.28, 20,335.60 and 3,697.12

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Solution

The fourth proportional to 13,557.28, 20,335.60 and 3,697.12 is: 5,545.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.28 : 20,335.60 = 3,697.12 : x
  2. Step 2: Convert to fraction form
    13,557.28/20,335.60 = 3,697.12/x
  3. Step 3: Cross multiply
    13,557.28x = 20,335.60 × 3,697.12
  4. Step 4: Simplify right side
    13,557.28x = 75,183,153.47
  5. Step 5: Solve for x
    x = 75,183,153.47/13,557.28
  6. Step 6: Final answer
    x = 5,545.59

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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.