Home / 31,710.60-43,760.52-18,281.78

Finding the Fourth Proportional to 31,710.60, 43,760.52 and 18,281.78

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Solution

The fourth proportional to 31,710.60, 43,760.52 and 18,281.78 is: 25,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,710.60 : 43,760.52 = 18,281.78 : x
  2. Step 2: Convert to fraction form
    31,710.60/43,760.52 = 18,281.78/x
  3. Step 3: Cross multiply
    31,710.60x = 43,760.52 × 18,281.78
  4. Step 4: Simplify right side
    31,710.60x = 800,020,199.33
  5. Step 5: Solve for x
    x = 800,020,199.33/31,710.60
  6. Step 6: Final answer
    x = 25,228.79

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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.