Home / 31,241-43,117.70-18,000.68

Finding the Fourth Proportional to 31,241, 43,117.70 and 18,000.68

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Solution

The fourth proportional to 31,241, 43,117.70 and 18,000.68 is: 24,843.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,241 : 43,117.70 = 18,000.68 : x
  2. Step 2: Convert to fraction form
    31,241/43,117.70 = 18,000.68/x
  3. Step 3: Cross multiply
    31,241x = 43,117.70 × 18,000.68
  4. Step 4: Simplify right side
    31,241x = 776,147,920.04
  5. Step 5: Solve for x
    x = 776,147,920.04/31,241
  6. Step 6: Final answer
    x = 24,843.89

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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.