Home / 10,540.78-15,805.80-3,518.28

Finding the Fourth Proportional to 10,540.78, 15,805.80 and 3,518.28

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Solution

The fourth proportional to 10,540.78, 15,805.80 and 3,518.28 is: 5,275.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,540.78 : 15,805.80 = 3,518.28 : x
  2. Step 2: Convert to fraction form
    10,540.78/15,805.80 = 3,518.28/x
  3. Step 3: Cross multiply
    10,540.78x = 15,805.80 × 3,518.28
  4. Step 4: Simplify right side
    10,540.78x = 55,609,230.02
  5. Step 5: Solve for x
    x = 55,609,230.02/10,540.78
  6. Step 6: Final answer
    x = 5,275.63

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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.