Home / 25,979.10-38,972.10-8,443.02

Finding the Fourth Proportional to 25,979.10, 38,972.10 and 8,443.02

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Solution

The fourth proportional to 25,979.10, 38,972.10 and 8,443.02 is: 12,665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,979.10 : 38,972.10 = 8,443.02 : x
  2. Step 2: Convert to fraction form
    25,979.10/38,972.10 = 8,443.02/x
  3. Step 3: Cross multiply
    25,979.10x = 38,972.10 × 8,443.02
  4. Step 4: Simplify right side
    25,979.10x = 329,042,219.74
  5. Step 5: Solve for x
    x = 329,042,219.74/25,979.10
  6. Step 6: Final answer
    x = 12,665.65

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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.