Home / 31,378.64-43,302.30-17,231.20

Finding the Fourth Proportional to 31,378.64, 43,302.30 and 17,231.20

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Solution

The fourth proportional to 31,378.64, 43,302.30 and 17,231.20 is: 23,778.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.64 : 43,302.30 = 17,231.20 : x
  2. Step 2: Convert to fraction form
    31,378.64/43,302.30 = 17,231.20/x
  3. Step 3: Cross multiply
    31,378.64x = 43,302.30 × 17,231.20
  4. Step 4: Simplify right side
    31,378.64x = 746,150,591.76
  5. Step 5: Solve for x
    x = 746,150,591.76/31,378.64
  6. Step 6: Final answer
    x = 23,778.93

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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.