Home / 31,822.29-43,909.88-18,390.95

Finding the Fourth Proportional to 31,822.29, 43,909.88 and 18,390.95

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Solution

The fourth proportional to 31,822.29, 43,909.88 and 18,390.95 is: 25,376.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,822.29 : 43,909.88 = 18,390.95 : x
  2. Step 2: Convert to fraction form
    31,822.29/43,909.88 = 18,390.95/x
  3. Step 3: Cross multiply
    31,822.29x = 43,909.88 × 18,390.95
  4. Step 4: Simplify right side
    31,822.29x = 807,544,407.59
  5. Step 5: Solve for x
    x = 807,544,407.59/31,822.29
  6. Step 6: Final answer
    x = 25,376.69

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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.