Home / 12,657.26-18,986.54-5,260.95

Finding the Fourth Proportional to 12,657.26, 18,986.54 and 5,260.95

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Solution

The fourth proportional to 12,657.26, 18,986.54 and 5,260.95 is: 7,891.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.26 : 18,986.54 = 5,260.95 : x
  2. Step 2: Convert to fraction form
    12,657.26/18,986.54 = 5,260.95/x
  3. Step 3: Cross multiply
    12,657.26x = 18,986.54 × 5,260.95
  4. Step 4: Simplify right side
    12,657.26x = 99,887,211.31
  5. Step 5: Solve for x
    x = 99,887,211.31/12,657.26
  6. Step 6: Final answer
    x = 7,891.69

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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.