Home / 25,431.40-38,149.17-12,774.65

Finding the Fourth Proportional to 25,431.40, 38,149.17 and 12,774.65

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Solution

The fourth proportional to 25,431.40, 38,149.17 and 12,774.65 is: 19,163.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,431.40 : 38,149.17 = 12,774.65 : x
  2. Step 2: Convert to fraction form
    25,431.40/38,149.17 = 12,774.65/x
  3. Step 3: Cross multiply
    25,431.40x = 38,149.17 × 12,774.65
  4. Step 4: Simplify right side
    25,431.40x = 487,342,145.71
  5. Step 5: Solve for x
    x = 487,342,145.71/25,431.40
  6. Step 6: Final answer
    x = 19,163.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.