Home / 20,102.13-30,171.80-10,248.75

Finding the Fourth Proportional to 20,102.13, 30,171.80 and 10,248.75

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Solution

The fourth proportional to 20,102.13, 30,171.80 and 10,248.75 is: 15,382.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.13 : 30,171.80 = 10,248.75 : x
  2. Step 2: Convert to fraction form
    20,102.13/30,171.80 = 10,248.75/x
  3. Step 3: Cross multiply
    20,102.13x = 30,171.80 × 10,248.75
  4. Step 4: Simplify right side
    20,102.13x = 309,223,235.25
  5. Step 5: Solve for x
    x = 309,223,235.25/20,102.13
  6. Step 6: Final answer
    x = 15,382.61

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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.