Home / 25,960.74-38,942.40-12,645.96

Finding the Fourth Proportional to 25,960.74, 38,942.40 and 12,645.96

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Solution

The fourth proportional to 25,960.74, 38,942.40 and 12,645.96 is: 18,969.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,960.74 : 38,942.40 = 12,645.96 : x
  2. Step 2: Convert to fraction form
    25,960.74/38,942.40 = 12,645.96/x
  3. Step 3: Cross multiply
    25,960.74x = 38,942.40 × 12,645.96
  4. Step 4: Simplify right side
    25,960.74x = 492,464,032.70
  5. Step 5: Solve for x
    x = 492,464,032.70/25,960.74
  6. Step 6: Final answer
    x = 18,969.57

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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.