Home / 31,447.88-43,394.55-18,015.47

Finding the Fourth Proportional to 31,447.88, 43,394.55 and 18,015.47

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Solution

The fourth proportional to 31,447.88, 43,394.55 and 18,015.47 is: 24,859.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,447.88 : 43,394.55 = 18,015.47 : x
  2. Step 2: Convert to fraction form
    31,447.88/43,394.55 = 18,015.47/x
  3. Step 3: Cross multiply
    31,447.88x = 43,394.55 × 18,015.47
  4. Step 4: Simplify right side
    31,447.88x = 781,773,213.69
  5. Step 5: Solve for x
    x = 781,773,213.69/31,447.88
  6. Step 6: Final answer
    x = 24,859.33

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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.