Home / 20,187.92-30,281.61-7,040.25

Finding the Fourth Proportional to 20,187.92, 30,281.61 and 7,040.25

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Solution

The fourth proportional to 20,187.92, 30,281.61 and 7,040.25 is: 10,560.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.92 : 30,281.61 = 7,040.25 : x
  2. Step 2: Convert to fraction form
    20,187.92/30,281.61 = 7,040.25/x
  3. Step 3: Cross multiply
    20,187.92x = 30,281.61 × 7,040.25
  4. Step 4: Simplify right side
    20,187.92x = 213,190,104.80
  5. Step 5: Solve for x
    x = 213,190,104.80/20,187.92
  6. Step 6: Final answer
    x = 10,560.28

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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.