Home / 10,515.60-15,764.22-3,940.02

Finding the Fourth Proportional to 10,515.60, 15,764.22 and 3,940.02

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Solution

The fourth proportional to 10,515.60, 15,764.22 and 3,940.02 is: 5,906.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.60 : 15,764.22 = 3,940.02 : x
  2. Step 2: Convert to fraction form
    10,515.60/15,764.22 = 3,940.02/x
  3. Step 3: Cross multiply
    10,515.60x = 15,764.22 × 3,940.02
  4. Step 4: Simplify right side
    10,515.60x = 62,111,342.08
  5. Step 5: Solve for x
    x = 62,111,342.08/10,515.60
  6. Step 6: Final answer
    x = 5,906.59

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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.