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Finding the Fourth Proportional to 13,445.88, 20,153.88 and 10,148.28

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Solution

The fourth proportional to 13,445.88, 20,153.88 and 10,148.28 is: 15,211.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.88 : 20,153.88 = 10,148.28 : x
  2. Step 2: Convert to fraction form
    13,445.88/20,153.88 = 10,148.28/x
  3. Step 3: Cross multiply
    13,445.88x = 20,153.88 × 10,148.28
  4. Step 4: Simplify right side
    13,445.88x = 204,527,217.33
  5. Step 5: Solve for x
    x = 204,527,217.33/13,445.88
  6. Step 6: Final answer
    x = 15,211.14

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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.