Home / 20,173.38-30,288.15-10,319.46

Finding the Fourth Proportional to 20,173.38, 30,288.15 and 10,319.46

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Solution

The fourth proportional to 20,173.38, 30,288.15 and 10,319.46 is: 15,493.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.38 : 30,288.15 = 10,319.46 : x
  2. Step 2: Convert to fraction form
    20,173.38/30,288.15 = 10,319.46/x
  3. Step 3: Cross multiply
    20,173.38x = 30,288.15 × 10,319.46
  4. Step 4: Simplify right side
    20,173.38x = 312,557,352.40
  5. Step 5: Solve for x
    x = 312,557,352.40/20,173.38
  6. Step 6: Final answer
    x = 15,493.55

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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.