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Finding the Fourth Proportional to 9,335.68, 13,987.04 and 8,318.72

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Solution

The fourth proportional to 9,335.68, 13,987.04 and 8,318.72 is: 12,463.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,335.68 : 13,987.04 = 8,318.72 : x
  2. Step 2: Convert to fraction form
    9,335.68/13,987.04 = 8,318.72/x
  3. Step 3: Cross multiply
    9,335.68x = 13,987.04 × 8,318.72
  4. Step 4: Simplify right side
    9,335.68x = 116,354,269.39
  5. Step 5: Solve for x
    x = 116,354,269.39/9,335.68
  6. Step 6: Final answer
    x = 12,463.40

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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.