Home / 31,407.03-43,352.10-20,659.80

Finding the Fourth Proportional to 31,407.03, 43,352.10 and 20,659.80

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Solution

The fourth proportional to 31,407.03, 43,352.10 and 20,659.80 is: 28,517.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,407.03 : 43,352.10 = 20,659.80 : x
  2. Step 2: Convert to fraction form
    31,407.03/43,352.10 = 20,659.80/x
  3. Step 3: Cross multiply
    31,407.03x = 43,352.10 × 20,659.80
  4. Step 4: Simplify right side
    31,407.03x = 895,645,715.58
  5. Step 5: Solve for x
    x = 895,645,715.58/31,407.03
  6. Step 6: Final answer
    x = 28,517.36

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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.