Home / 20,212.28-30,320.24-9,124.19

Finding the Fourth Proportional to 20,212.28, 30,320.24 and 9,124.19

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Solution

The fourth proportional to 20,212.28, 30,320.24 and 9,124.19 is: 13,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.28 : 30,320.24 = 9,124.19 : x
  2. Step 2: Convert to fraction form
    20,212.28/30,320.24 = 9,124.19/x
  3. Step 3: Cross multiply
    20,212.28x = 30,320.24 × 9,124.19
  4. Step 4: Simplify right side
    20,212.28x = 276,647,433.38
  5. Step 5: Solve for x
    x = 276,647,433.38/20,212.28
  6. Step 6: Final answer
    x = 13,687.10

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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.