Home / 20,371.70-30,559.48-7,220.95

Finding the Fourth Proportional to 20,371.70, 30,559.48 and 7,220.95

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Solution

The fourth proportional to 20,371.70, 30,559.48 and 7,220.95 is: 10,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.70 : 30,559.48 = 7,220.95 : x
  2. Step 2: Convert to fraction form
    20,371.70/30,559.48 = 7,220.95/x
  3. Step 3: Cross multiply
    20,371.70x = 30,559.48 × 7,220.95
  4. Step 4: Simplify right side
    20,371.70x = 220,668,382.65
  5. Step 5: Solve for x
    x = 220,668,382.65/20,371.70
  6. Step 6: Final answer
    x = 10,832.10

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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.