Home / 18,820.26-28,230.42-4,781.34

Finding the Fourth Proportional to 18,820.26, 28,230.42 and 4,781.34

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Solution

The fourth proportional to 18,820.26, 28,230.42 and 4,781.34 is: 7,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.26 : 28,230.42 = 4,781.34 : x
  2. Step 2: Convert to fraction form
    18,820.26/28,230.42 = 4,781.34/x
  3. Step 3: Cross multiply
    18,820.26x = 28,230.42 × 4,781.34
  4. Step 4: Simplify right side
    18,820.26x = 134,979,236.36
  5. Step 5: Solve for x
    x = 134,979,236.36/18,820.26
  6. Step 6: Final answer
    x = 7,172.02

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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.