Home / 31,723.20-43,799.40-28,355.22

Finding the Fourth Proportional to 31,723.20, 43,799.40 and 28,355.22

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Solution

The fourth proportional to 31,723.20, 43,799.40 and 28,355.22 is: 39,149.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,723.20 : 43,799.40 = 28,355.22 : x
  2. Step 2: Convert to fraction form
    31,723.20/43,799.40 = 28,355.22/x
  3. Step 3: Cross multiply
    31,723.20x = 43,799.40 × 28,355.22
  4. Step 4: Simplify right side
    31,723.20x = 1,241,941,622.87
  5. Step 5: Solve for x
    x = 1,241,941,622.87/31,723.20
  6. Step 6: Final answer
    x = 39,149.32

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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.