Home / 20,871.55-31,307.39-6,080.84

Finding the Fourth Proportional to 20,871.55, 31,307.39 and 6,080.84

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Solution

The fourth proportional to 20,871.55, 31,307.39 and 6,080.84 is: 9,121.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871.55 : 31,307.39 = 6,080.84 : x
  2. Step 2: Convert to fraction form
    20,871.55/31,307.39 = 6,080.84/x
  3. Step 3: Cross multiply
    20,871.55x = 31,307.39 × 6,080.84
  4. Step 4: Simplify right side
    20,871.55x = 190,375,229.41
  5. Step 5: Solve for x
    x = 190,375,229.41/20,871.55
  6. Step 6: Final answer
    x = 9,121.28

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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.