Home / 18,671.72-25,757.10-11,112.66

Finding the Fourth Proportional to 18,671.72, 25,757.10 and 11,112.66

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Solution

The fourth proportional to 18,671.72, 25,757.10 and 11,112.66 is: 15,329.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.72 : 25,757.10 = 11,112.66 : x
  2. Step 2: Convert to fraction form
    18,671.72/25,757.10 = 11,112.66/x
  3. Step 3: Cross multiply
    18,671.72x = 25,757.10 × 11,112.66
  4. Step 4: Simplify right side
    18,671.72x = 286,229,894.89
  5. Step 5: Solve for x
    x = 286,229,894.89/18,671.72
  6. Step 6: Final answer
    x = 15,329.59

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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.