Home / 25,974.45-38,973.15-12,640.05

Finding the Fourth Proportional to 25,974.45, 38,973.15 and 12,640.05

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Solution

The fourth proportional to 25,974.45, 38,973.15 and 12,640.05 is: 18,965.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,974.45 : 38,973.15 = 12,640.05 : x
  2. Step 2: Convert to fraction form
    25,974.45/38,973.15 = 12,640.05/x
  3. Step 3: Cross multiply
    25,974.45x = 38,973.15 × 12,640.05
  4. Step 4: Simplify right side
    25,974.45x = 492,622,564.66
  5. Step 5: Solve for x
    x = 492,622,564.66/25,974.45
  6. Step 6: Final answer
    x = 18,965.66

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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.