Home / 11,088.38-15,281.91-9,189.95

Finding the Fourth Proportional to 11,088.38, 15,281.91 and 9,189.95

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Solution

The fourth proportional to 11,088.38, 15,281.91 and 9,189.95 is: 12,665.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,088.38 : 15,281.91 = 9,189.95 : x
  2. Step 2: Convert to fraction form
    11,088.38/15,281.91 = 9,189.95/x
  3. Step 3: Cross multiply
    11,088.38x = 15,281.91 × 9,189.95
  4. Step 4: Simplify right side
    11,088.38x = 140,439,912.39
  5. Step 5: Solve for x
    x = 140,439,912.39/11,088.38
  6. Step 6: Final answer
    x = 12,665.51

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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.