Home / 31,272.87-43,164.15-19,329

Finding the Fourth Proportional to 31,272.87, 43,164.15 and 19,329

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Solution

The fourth proportional to 31,272.87, 43,164.15 and 19,329 is: 26,678.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,272.87 : 43,164.15 = 19,329 : x
  2. Step 2: Convert to fraction form
    31,272.87/43,164.15 = 19,329/x
  3. Step 3: Cross multiply
    31,272.87x = 43,164.15 × 19,329
  4. Step 4: Simplify right side
    31,272.87x = 834,319,855.35
  5. Step 5: Solve for x
    x = 834,319,855.35/31,272.87
  6. Step 6: Final answer
    x = 26,678.71

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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.