Home / 20,135.05-30,203.15-5,343.98

Finding the Fourth Proportional to 20,135.05, 30,203.15 and 5,343.98

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Solution

The fourth proportional to 20,135.05, 30,203.15 and 5,343.98 is: 8,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.05 : 30,203.15 = 5,343.98 : x
  2. Step 2: Convert to fraction form
    20,135.05/30,203.15 = 5,343.98/x
  3. Step 3: Cross multiply
    20,135.05x = 30,203.15 × 5,343.98
  4. Step 4: Simplify right side
    20,135.05x = 161,404,851.80
  5. Step 5: Solve for x
    x = 161,404,851.80/20,135.05
  6. Step 6: Final answer
    x = 8,016.11

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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.