Home / 31,122.20-42,948.62-16,975.04

Finding the Fourth Proportional to 31,122.20, 42,948.62 and 16,975.04

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Solution

The fourth proportional to 31,122.20, 42,948.62 and 16,975.04 is: 23,425.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,122.20 : 42,948.62 = 16,975.04 : x
  2. Step 2: Convert to fraction form
    31,122.20/42,948.62 = 16,975.04/x
  3. Step 3: Cross multiply
    31,122.20x = 42,948.62 × 16,975.04
  4. Step 4: Simplify right side
    31,122.20x = 729,054,542.44
  5. Step 5: Solve for x
    x = 729,054,542.44/31,122.20
  6. Step 6: Final answer
    x = 23,425.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.