Home / 31,712.60-43,763.28-18,283.78

Finding the Fourth Proportional to 31,712.60, 43,763.28 and 18,283.78

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Solution

The fourth proportional to 31,712.60, 43,763.28 and 18,283.78 is: 25,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,712.60 : 43,763.28 = 18,283.78 : x
  2. Step 2: Convert to fraction form
    31,712.60/43,763.28 = 18,283.78/x
  3. Step 3: Cross multiply
    31,712.60x = 43,763.28 × 18,283.78
  4. Step 4: Simplify right side
    31,712.60x = 800,158,183.60
  5. Step 5: Solve for x
    x = 800,158,183.60/31,712.60
  6. Step 6: Final answer
    x = 25,231.55

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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.