Home / 25,939.26-38,907.27-12,780

Finding the Fourth Proportional to 25,939.26, 38,907.27 and 12,780

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Solution

The fourth proportional to 25,939.26, 38,907.27 and 12,780 is: 19,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,939.26 : 38,907.27 = 12,780 : x
  2. Step 2: Convert to fraction form
    25,939.26/38,907.27 = 12,780/x
  3. Step 3: Cross multiply
    25,939.26x = 38,907.27 × 12,780
  4. Step 4: Simplify right side
    25,939.26x = 497,234,910.60
  5. Step 5: Solve for x
    x = 497,234,910.60/25,939.26
  6. Step 6: Final answer
    x = 19,169.20

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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.