Home / 28,114.43-42,170.96-9,139.04

Finding the Fourth Proportional to 28,114.43, 42,170.96 and 9,139.04

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Solution

The fourth proportional to 28,114.43, 42,170.96 and 9,139.04 is: 13,708.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.43 : 42,170.96 = 9,139.04 : x
  2. Step 2: Convert to fraction form
    28,114.43/42,170.96 = 9,139.04/x
  3. Step 3: Cross multiply
    28,114.43x = 42,170.96 × 9,139.04
  4. Step 4: Simplify right side
    28,114.43x = 385,401,902.27
  5. Step 5: Solve for x
    x = 385,401,902.27/28,114.43
  6. Step 6: Final answer
    x = 13,708.33

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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.