Home / 20,756.10-31,129.56-5,961.72

Finding the Fourth Proportional to 20,756.10, 31,129.56 and 5,961.72

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Solution

The fourth proportional to 20,756.10, 31,129.56 and 5,961.72 is: 8,941.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.10 : 31,129.56 = 5,961.72 : x
  2. Step 2: Convert to fraction form
    20,756.10/31,129.56 = 5,961.72/x
  3. Step 3: Cross multiply
    20,756.10x = 31,129.56 × 5,961.72
  4. Step 4: Simplify right side
    20,756.10x = 185,585,720.44
  5. Step 5: Solve for x
    x = 185,585,720.44/20,756.10
  6. Step 6: Final answer
    x = 8,941.26

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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.