Home / 25,971.30-38,932.29-8,428.86

Finding the Fourth Proportional to 25,971.30, 38,932.29 and 8,428.86

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Solution

The fourth proportional to 25,971.30, 38,932.29 and 8,428.86 is: 12,635.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,971.30 : 38,932.29 = 8,428.86 : x
  2. Step 2: Convert to fraction form
    25,971.30/38,932.29 = 8,428.86/x
  3. Step 3: Cross multiply
    25,971.30x = 38,932.29 × 8,428.86
  4. Step 4: Simplify right side
    25,971.30x = 328,154,821.89
  5. Step 5: Solve for x
    x = 328,154,821.89/25,971.30
  6. Step 6: Final answer
    x = 12,635.29

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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.