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Finding the Fourth Proportional to 13,687.34, 20,534.08 and 4,922.25

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Solution

The fourth proportional to 13,687.34, 20,534.08 and 4,922.25 is: 7,384.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.34 : 20,534.08 = 4,922.25 : x
  2. Step 2: Convert to fraction form
    13,687.34/20,534.08 = 4,922.25/x
  3. Step 3: Cross multiply
    13,687.34x = 20,534.08 × 4,922.25
  4. Step 4: Simplify right side
    13,687.34x = 101,073,862.97
  5. Step 5: Solve for x
    x = 101,073,862.97/13,687.34
  6. Step 6: Final answer
    x = 7,384.48

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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.