Home / 20,180.60-30,343.80-19,743.20

Finding the Fourth Proportional to 20,180.60, 30,343.80 and 19,743.20

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Solution

The fourth proportional to 20,180.60, 30,343.80 and 19,743.20 is: 29,686.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.60 : 30,343.80 = 19,743.20 : x
  2. Step 2: Convert to fraction form
    20,180.60/30,343.80 = 19,743.20/x
  3. Step 3: Cross multiply
    20,180.60x = 30,343.80 × 19,743.20
  4. Step 4: Simplify right side
    20,180.60x = 599,083,712.16
  5. Step 5: Solve for x
    x = 599,083,712.16/20,180.60
  6. Step 6: Final answer
    x = 29,686.12

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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.