Home / 20,750.80-31,116.84-5,956.36

Finding the Fourth Proportional to 20,750.80, 31,116.84 and 5,956.36

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Solution

The fourth proportional to 20,750.80, 31,116.84 and 5,956.36 is: 8,931.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.80 : 31,116.84 = 5,956.36 : x
  2. Step 2: Convert to fraction form
    20,750.80/31,116.84 = 5,956.36/x
  3. Step 3: Cross multiply
    20,750.80x = 31,116.84 × 5,956.36
  4. Step 4: Simplify right side
    20,750.80x = 185,343,101.10
  5. Step 5: Solve for x
    x = 185,343,101.10/20,750.80
  6. Step 6: Final answer
    x = 8,931.85

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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.