Home / 20,085.28-30,129.42-6,758.31

Finding the Fourth Proportional to 20,085.28, 30,129.42 and 6,758.31

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Solution

The fourth proportional to 20,085.28, 30,129.42 and 6,758.31 is: 10,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.28 : 30,129.42 = 6,758.31 : x
  2. Step 2: Convert to fraction form
    20,085.28/30,129.42 = 6,758.31/x
  3. Step 3: Cross multiply
    20,085.28x = 30,129.42 × 6,758.31
  4. Step 4: Simplify right side
    20,085.28x = 203,623,885.16
  5. Step 5: Solve for x
    x = 203,623,885.16/20,085.28
  6. Step 6: Final answer
    x = 10,137.96

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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.