Home / 10,959.72-15,131.16-7,135.02

Finding the Fourth Proportional to 10,959.72, 15,131.16 and 7,135.02

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Solution

The fourth proportional to 10,959.72, 15,131.16 and 7,135.02 is: 9,850.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959.72 : 15,131.16 = 7,135.02 : x
  2. Step 2: Convert to fraction form
    10,959.72/15,131.16 = 7,135.02/x
  3. Step 3: Cross multiply
    10,959.72x = 15,131.16 × 7,135.02
  4. Step 4: Simplify right side
    10,959.72x = 107,961,129.22
  5. Step 5: Solve for x
    x = 107,961,129.22/10,959.72
  6. Step 6: Final answer
    x = 9,850.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.