Home / 10,216.78-15,331.07-4,293.20

Finding the Fourth Proportional to 10,216.78, 15,331.07 and 4,293.20

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Solution

The fourth proportional to 10,216.78, 15,331.07 and 4,293.20 is: 6,442.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,216.78 : 15,331.07 = 4,293.20 : x
  2. Step 2: Convert to fraction form
    10,216.78/15,331.07 = 4,293.20/x
  3. Step 3: Cross multiply
    10,216.78x = 15,331.07 × 4,293.20
  4. Step 4: Simplify right side
    10,216.78x = 65,819,398.78
  5. Step 5: Solve for x
    x = 65,819,398.78/10,216.78
  6. Step 6: Final answer
    x = 6,442.28

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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.