Home / 31,722.40-43,776.24-18,293.60

Finding the Fourth Proportional to 31,722.40, 43,776.24 and 18,293.60

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Solution

The fourth proportional to 31,722.40, 43,776.24 and 18,293.60 is: 25,244.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,722.40 : 43,776.24 = 18,293.60 : x
  2. Step 2: Convert to fraction form
    31,722.40/43,776.24 = 18,293.60/x
  3. Step 3: Cross multiply
    31,722.40x = 43,776.24 × 18,293.60
  4. Step 4: Simplify right side
    31,722.40x = 800,825,024.06
  5. Step 5: Solve for x
    x = 800,825,024.06/31,722.40
  6. Step 6: Final answer
    x = 25,244.78

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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.