Home / 20,877.52-28,807.85-11,923.12

Finding the Fourth Proportional to 20,877.52, 28,807.85 and 11,923.12

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Solution

The fourth proportional to 20,877.52, 28,807.85 and 11,923.12 is: 16,452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.52 : 28,807.85 = 11,923.12 : x
  2. Step 2: Convert to fraction form
    20,877.52/28,807.85 = 11,923.12/x
  3. Step 3: Cross multiply
    20,877.52x = 28,807.85 × 11,923.12
  4. Step 4: Simplify right side
    20,877.52x = 343,479,452.49
  5. Step 5: Solve for x
    x = 343,479,452.49/20,877.52
  6. Step 6: Final answer
    x = 16,452.12

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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.