Home / 20,968-28,912.20-16,177.04

Finding the Fourth Proportional to 20,968, 28,912.20 and 16,177.04

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Solution

The fourth proportional to 20,968, 28,912.20 and 16,177.04 is: 22,306.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968 : 28,912.20 = 16,177.04 : x
  2. Step 2: Convert to fraction form
    20,968/28,912.20 = 16,177.04/x
  3. Step 3: Cross multiply
    20,968x = 28,912.20 × 16,177.04
  4. Step 4: Simplify right side
    20,968x = 467,713,815.89
  5. Step 5: Solve for x
    x = 467,713,815.89/20,968
  6. Step 6: Final answer
    x = 22,306.08

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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.