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Finding the Fourth Proportional to 13,372.56, 18,454.46 and 7,708.68

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Solution

The fourth proportional to 13,372.56, 18,454.46 and 7,708.68 is: 10,638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.56 : 18,454.46 = 7,708.68 : x
  2. Step 2: Convert to fraction form
    13,372.56/18,454.46 = 7,708.68/x
  3. Step 3: Cross multiply
    13,372.56x = 18,454.46 × 7,708.68
  4. Step 4: Simplify right side
    13,372.56x = 142,259,488.17
  5. Step 5: Solve for x
    x = 142,259,488.17/13,372.56
  6. Step 6: Final answer
    x = 10,638.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.