Home / 28,008.20-41,975.40-20,577.80

Finding the Fourth Proportional to 28,008.20, 41,975.40 and 20,577.80

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Solution

The fourth proportional to 28,008.20, 41,975.40 and 20,577.80 is: 30,839.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.20 : 41,975.40 = 20,577.80 : x
  2. Step 2: Convert to fraction form
    28,008.20/41,975.40 = 20,577.80/x
  3. Step 3: Cross multiply
    28,008.20x = 41,975.40 × 20,577.80
  4. Step 4: Simplify right side
    28,008.20x = 863,761,386.12
  5. Step 5: Solve for x
    x = 863,761,386.12/28,008.20
  6. Step 6: Final answer
    x = 30,839.59

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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.