Home / 9,132.92-12,655.55-8,578.04

Finding the Fourth Proportional to 9,132.92, 12,655.55 and 8,578.04

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Solution

The fourth proportional to 9,132.92, 12,655.55 and 8,578.04 is: 11,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,132.92 : 12,655.55 = 8,578.04 : x
  2. Step 2: Convert to fraction form
    9,132.92/12,655.55 = 8,578.04/x
  3. Step 3: Cross multiply
    9,132.92x = 12,655.55 × 8,578.04
  4. Step 4: Simplify right side
    9,132.92x = 108,559,814.12
  5. Step 5: Solve for x
    x = 108,559,814.12/9,132.92
  6. Step 6: Final answer
    x = 11,886.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.