Home / 20,756.20-31,134.30-5,965.60

Finding the Fourth Proportional to 20,756.20, 31,134.30 and 5,965.60

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Solution

The fourth proportional to 20,756.20, 31,134.30 and 5,965.60 is: 8,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.20 : 31,134.30 = 5,965.60 : x
  2. Step 2: Convert to fraction form
    20,756.20/31,134.30 = 5,965.60/x
  3. Step 3: Cross multiply
    20,756.20x = 31,134.30 × 5,965.60
  4. Step 4: Simplify right side
    20,756.20x = 185,734,780.08
  5. Step 5: Solve for x
    x = 185,734,780.08/20,756.20
  6. Step 6: Final answer
    x = 8,948.40

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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.