Home / 31,238.28-43,069.86-20,608.92

Finding the Fourth Proportional to 31,238.28, 43,069.86 and 20,608.92

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Solution

The fourth proportional to 31,238.28, 43,069.86 and 20,608.92 is: 28,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,238.28 : 43,069.86 = 20,608.92 : x
  2. Step 2: Convert to fraction form
    31,238.28/43,069.86 = 20,608.92/x
  3. Step 3: Cross multiply
    31,238.28x = 43,069.86 × 20,608.92
  4. Step 4: Simplify right side
    31,238.28x = 887,623,299.15
  5. Step 5: Solve for x
    x = 887,623,299.15/31,238.28
  6. Step 6: Final answer
    x = 28,414.60

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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.