Home / 13,557.28-20,375.28-8,969.44

Finding the Fourth Proportional to 13,557.28, 20,375.28 and 8,969.44

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Solution

The fourth proportional to 13,557.28, 20,375.28 and 8,969.44 is: 13,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.28 : 20,375.28 = 8,969.44 : x
  2. Step 2: Convert to fraction form
    13,557.28/20,375.28 = 8,969.44/x
  3. Step 3: Cross multiply
    13,557.28x = 20,375.28 × 8,969.44
  4. Step 4: Simplify right side
    13,557.28x = 182,754,851.44
  5. Step 5: Solve for x
    x = 182,754,851.44/13,557.28
  6. Step 6: Final answer
    x = 13,480.20

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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.