Home / 28,121.55-42,161.33-17,025.57

Finding the Fourth Proportional to 28,121.55, 42,161.33 and 17,025.57

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Solution

The fourth proportional to 28,121.55, 42,161.33 and 17,025.57 is: 25,525.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.55 : 42,161.33 = 17,025.57 : x
  2. Step 2: Convert to fraction form
    28,121.55/42,161.33 = 17,025.57/x
  3. Step 3: Cross multiply
    28,121.55x = 42,161.33 × 17,025.57
  4. Step 4: Simplify right side
    28,121.55x = 717,820,590.08
  5. Step 5: Solve for x
    x = 717,820,590.08/28,121.55
  6. Step 6: Final answer
    x = 25,525.64

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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.