Home / 20,320.20-30,473.82-10,458.18

Finding the Fourth Proportional to 20,320.20, 30,473.82 and 10,458.18

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Solution

The fourth proportional to 20,320.20, 30,473.82 and 10,458.18 is: 15,683.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.20 : 30,473.82 = 10,458.18 : x
  2. Step 2: Convert to fraction form
    20,320.20/30,473.82 = 10,458.18/x
  3. Step 3: Cross multiply
    20,320.20x = 30,473.82 × 10,458.18
  4. Step 4: Simplify right side
    20,320.20x = 318,700,694.85
  5. Step 5: Solve for x
    x = 318,700,694.85/20,320.20
  6. Step 6: Final answer
    x = 15,683.93

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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.