Home / 15,001.29-20,701.67-8,286.84

Finding the Fourth Proportional to 15,001.29, 20,701.67 and 8,286.84

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Solution

The fourth proportional to 15,001.29, 20,701.67 and 8,286.84 is: 11,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,001.29 : 20,701.67 = 8,286.84 : x
  2. Step 2: Convert to fraction form
    15,001.29/20,701.67 = 8,286.84/x
  3. Step 3: Cross multiply
    15,001.29x = 20,701.67 × 8,286.84
  4. Step 4: Simplify right side
    15,001.29x = 171,551,385.59
  5. Step 5: Solve for x
    x = 171,551,385.59/15,001.29
  6. Step 6: Final answer
    x = 11,435.78

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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.