Home / 27,689.31-41,555.84-12,890.61

Finding the Fourth Proportional to 27,689.31, 41,555.84 and 12,890.61

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Solution

The fourth proportional to 27,689.31, 41,555.84 and 12,890.61 is: 19,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.31 : 41,555.84 = 12,890.61 : x
  2. Step 2: Convert to fraction form
    27,689.31/41,555.84 = 12,890.61/x
  3. Step 3: Cross multiply
    27,689.31x = 41,555.84 × 12,890.61
  4. Step 4: Simplify right side
    27,689.31x = 535,680,062.21
  5. Step 5: Solve for x
    x = 535,680,062.21/27,689.31
  6. Step 6: Final answer
    x = 19,346.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.