Home / 20,773.18-28,660.23-12,275.55

Finding the Fourth Proportional to 20,773.18, 28,660.23 and 12,275.55

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Solution

The fourth proportional to 20,773.18, 28,660.23 and 12,275.55 is: 16,936.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.18 : 28,660.23 = 12,275.55 : x
  2. Step 2: Convert to fraction form
    20,773.18/28,660.23 = 12,275.55/x
  3. Step 3: Cross multiply
    20,773.18x = 28,660.23 × 12,275.55
  4. Step 4: Simplify right side
    20,773.18x = 351,820,086.38
  5. Step 5: Solve for x
    x = 351,820,086.38/20,773.18
  6. Step 6: Final answer
    x = 16,936.27

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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.