Home / 9,145.38-13,636.11-8,979.30

Finding the Fourth Proportional to 9,145.38, 13,636.11 and 8,979.30

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Solution

The fourth proportional to 9,145.38, 13,636.11 and 8,979.30 is: 13,388.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.38 : 13,636.11 = 8,979.30 : x
  2. Step 2: Convert to fraction form
    9,145.38/13,636.11 = 8,979.30/x
  3. Step 3: Cross multiply
    9,145.38x = 13,636.11 × 8,979.30
  4. Step 4: Simplify right side
    9,145.38x = 122,442,722.52
  5. Step 5: Solve for x
    x = 122,442,722.52/9,145.38
  6. Step 6: Final answer
    x = 13,388.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.