Home / 11,781.32-17,670.15-11,130.69

Finding the Fourth Proportional to 11,781.32, 17,670.15 and 11,130.69

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Solution

The fourth proportional to 11,781.32, 17,670.15 and 11,130.69 is: 16,694.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.32 : 17,670.15 = 11,130.69 : x
  2. Step 2: Convert to fraction form
    11,781.32/17,670.15 = 11,130.69/x
  3. Step 3: Cross multiply
    11,781.32x = 17,670.15 × 11,130.69
  4. Step 4: Simplify right side
    11,781.32x = 196,680,961.90
  5. Step 5: Solve for x
    x = 196,680,961.90/11,781.32
  6. Step 6: Final answer
    x = 16,694.31

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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.