Home / 20,305.28-28,024.92-12,240.38

Finding the Fourth Proportional to 20,305.28, 28,024.92 and 12,240.38

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Solution

The fourth proportional to 20,305.28, 28,024.92 and 12,240.38 is: 16,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.28 : 28,024.92 = 12,240.38 : x
  2. Step 2: Convert to fraction form
    20,305.28/28,024.92 = 12,240.38/x
  3. Step 3: Cross multiply
    20,305.28x = 28,024.92 × 12,240.38
  4. Step 4: Simplify right side
    20,305.28x = 343,035,740.33
  5. Step 5: Solve for x
    x = 343,035,740.33/20,305.28
  6. Step 6: Final answer
    x = 16,893.92

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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.