Home / 31,306.68-43,216.74-18,729

Finding the Fourth Proportional to 31,306.68, 43,216.74 and 18,729

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Solution

The fourth proportional to 31,306.68, 43,216.74 and 18,729 is: 25,854.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,306.68 : 43,216.74 = 18,729 : x
  2. Step 2: Convert to fraction form
    31,306.68/43,216.74 = 18,729/x
  3. Step 3: Cross multiply
    31,306.68x = 43,216.74 × 18,729
  4. Step 4: Simplify right side
    31,306.68x = 809,406,323.46
  5. Step 5: Solve for x
    x = 809,406,323.46/31,306.68
  6. Step 6: Final answer
    x = 25,854.11

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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.