Home / 27,107.85-40,641.69-12,869.28

Finding the Fourth Proportional to 27,107.85, 40,641.69 and 12,869.28

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Solution

The fourth proportional to 27,107.85, 40,641.69 and 12,869.28 is: 19,294.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,107.85 : 40,641.69 = 12,869.28 : x
  2. Step 2: Convert to fraction form
    27,107.85/40,641.69 = 12,869.28/x
  3. Step 3: Cross multiply
    27,107.85x = 40,641.69 × 12,869.28
  4. Step 4: Simplify right side
    27,107.85x = 523,029,288.28
  5. Step 5: Solve for x
    x = 523,029,288.28/27,107.85
  6. Step 6: Final answer
    x = 19,294.38

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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.