Home / 9,118.92-12,636.09-8,564.04

Finding the Fourth Proportional to 9,118.92, 12,636.09 and 8,564.04

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Solution

The fourth proportional to 9,118.92, 12,636.09 and 8,564.04 is: 11,867.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.92 : 12,636.09 = 8,564.04 : x
  2. Step 2: Convert to fraction form
    9,118.92/12,636.09 = 8,564.04/x
  3. Step 3: Cross multiply
    9,118.92x = 12,636.09 × 8,564.04
  4. Step 4: Simplify right side
    9,118.92x = 108,215,980.20
  5. Step 5: Solve for x
    x = 108,215,980.20/9,118.92
  6. Step 6: Final answer
    x = 11,867.19

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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.