Home / 31,209.29-43,068-18,463.13

Finding the Fourth Proportional to 31,209.29, 43,068 and 18,463.13

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Solution

The fourth proportional to 31,209.29, 43,068 and 18,463.13 is: 25,478.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,209.29 : 43,068 = 18,463.13 : x
  2. Step 2: Convert to fraction form
    31,209.29/43,068 = 18,463.13/x
  3. Step 3: Cross multiply
    31,209.29x = 43,068 × 18,463.13
  4. Step 4: Simplify right side
    31,209.29x = 795,169,867.50
  5. Step 5: Solve for x
    x = 795,169,867.50/31,209.29
  6. Step 6: Final answer
    x = 25,478.63

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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.