Home / 25,625.31-38,443.53-7,856.04

Finding the Fourth Proportional to 25,625.31, 38,443.53 and 7,856.04

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Solution

The fourth proportional to 25,625.31, 38,443.53 and 7,856.04 is: 11,785.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,625.31 : 38,443.53 = 7,856.04 : x
  2. Step 2: Convert to fraction form
    25,625.31/38,443.53 = 7,856.04/x
  3. Step 3: Cross multiply
    25,625.31x = 38,443.53 × 7,856.04
  4. Step 4: Simplify right side
    25,625.31x = 302,013,717.20
  5. Step 5: Solve for x
    x = 302,013,717.20/25,625.31
  6. Step 6: Final answer
    x = 11,785.76

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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.