Home / 15,101.47-20,836.92-8,725.78

Finding the Fourth Proportional to 15,101.47, 20,836.92 and 8,725.78

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Solution

The fourth proportional to 15,101.47, 20,836.92 and 8,725.78 is: 12,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.47 : 20,836.92 = 8,725.78 : x
  2. Step 2: Convert to fraction form
    15,101.47/20,836.92 = 8,725.78/x
  3. Step 3: Cross multiply
    15,101.47x = 20,836.92 × 8,725.78
  4. Step 4: Simplify right side
    15,101.47x = 181,818,379.80
  5. Step 5: Solve for x
    x = 181,818,379.80/15,101.47
  6. Step 6: Final answer
    x = 12,039.78

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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.