Home / 31,400.43-43,343.98-20,793.48

Finding the Fourth Proportional to 31,400.43, 43,343.98 and 20,793.48

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Solution

The fourth proportional to 31,400.43, 43,343.98 and 20,793.48 is: 28,702.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,400.43 : 43,343.98 = 20,793.48 : x
  2. Step 2: Convert to fraction form
    31,400.43/43,343.98 = 20,793.48/x
  3. Step 3: Cross multiply
    31,400.43x = 43,343.98 × 20,793.48
  4. Step 4: Simplify right side
    31,400.43x = 901,271,966.73
  5. Step 5: Solve for x
    x = 901,271,966.73/31,400.43
  6. Step 6: Final answer
    x = 28,702.54

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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.