Home / 20,760.23-28,648.98-11,807.70

Finding the Fourth Proportional to 20,760.23, 28,648.98 and 11,807.70

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Solution

The fourth proportional to 20,760.23, 28,648.98 and 11,807.70 is: 16,294.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.23 : 28,648.98 = 11,807.70 : x
  2. Step 2: Convert to fraction form
    20,760.23/28,648.98 = 11,807.70/x
  3. Step 3: Cross multiply
    20,760.23x = 28,648.98 × 11,807.70
  4. Step 4: Simplify right side
    20,760.23x = 338,278,561.15
  5. Step 5: Solve for x
    x = 338,278,561.15/20,760.23
  6. Step 6: Final answer
    x = 16,294.55

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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.