Home / 11,132.31-15,365.12-6,939.75

Finding the Fourth Proportional to 11,132.31, 15,365.12 and 6,939.75

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Solution

The fourth proportional to 11,132.31, 15,365.12 and 6,939.75 is: 9,578.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,132.31 : 15,365.12 = 6,939.75 : x
  2. Step 2: Convert to fraction form
    11,132.31/15,365.12 = 6,939.75/x
  3. Step 3: Cross multiply
    11,132.31x = 15,365.12 × 6,939.75
  4. Step 4: Simplify right side
    11,132.31x = 106,630,056.82
  5. Step 5: Solve for x
    x = 106,630,056.82/11,132.31
  6. Step 6: Final answer
    x = 9,578.43

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1.5x scale

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.