Home / 20,767.60-31,151.40-6,914.80

Finding the Fourth Proportional to 20,767.60, 31,151.40 and 6,914.80

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Solution

The fourth proportional to 20,767.60, 31,151.40 and 6,914.80 is: 10,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.60 : 31,151.40 = 6,914.80 : x
  2. Step 2: Convert to fraction form
    20,767.60/31,151.40 = 6,914.80/x
  3. Step 3: Cross multiply
    20,767.60x = 31,151.40 × 6,914.80
  4. Step 4: Simplify right side
    20,767.60x = 215,405,700.72
  5. Step 5: Solve for x
    x = 215,405,700.72/20,767.60
  6. Step 6: Final answer
    x = 10,372.20

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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.