Home / 20,850.80-31,278.18-5,857.88

Finding the Fourth Proportional to 20,850.80, 31,278.18 and 5,857.88

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Solution

The fourth proportional to 20,850.80, 31,278.18 and 5,857.88 is: 8,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.80 : 31,278.18 = 5,857.88 : x
  2. Step 2: Convert to fraction form
    20,850.80/31,278.18 = 5,857.88/x
  3. Step 3: Cross multiply
    20,850.80x = 31,278.18 × 5,857.88
  4. Step 4: Simplify right side
    20,850.80x = 183,223,825.06
  5. Step 5: Solve for x
    x = 183,223,825.06/20,850.80
  6. Step 6: Final answer
    x = 8,787.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.