Home / 20,188.80-30,283.38-7,041.15

Finding the Fourth Proportional to 20,188.80, 30,283.38 and 7,041.15

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Solution

The fourth proportional to 20,188.80, 30,283.38 and 7,041.15 is: 10,561.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.80 : 30,283.38 = 7,041.15 : x
  2. Step 2: Convert to fraction form
    20,188.80/30,283.38 = 7,041.15/x
  3. Step 3: Cross multiply
    20,188.80x = 30,283.38 × 7,041.15
  4. Step 4: Simplify right side
    20,188.80x = 213,229,821.09
  5. Step 5: Solve for x
    x = 213,229,821.09/20,188.80
  6. Step 6: Final answer
    x = 10,561.79

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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.