Home / 25,428.11-38,147.28-8,788.79

Finding the Fourth Proportional to 25,428.11, 38,147.28 and 8,788.79

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Solution

The fourth proportional to 25,428.11, 38,147.28 and 8,788.79 is: 13,184.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,428.11 : 38,147.28 = 8,788.79 : x
  2. Step 2: Convert to fraction form
    25,428.11/38,147.28 = 8,788.79/x
  3. Step 3: Cross multiply
    25,428.11x = 38,147.28 × 8,788.79
  4. Step 4: Simplify right side
    25,428.11x = 335,268,242.25
  5. Step 5: Solve for x
    x = 335,268,242.25/25,428.11
  6. Step 6: Final answer
    x = 13,184.95

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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.