Home / 11,112.40-15,335.55-6,635.12

Finding the Fourth Proportional to 11,112.40, 15,335.55 and 6,635.12

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Solution

The fourth proportional to 11,112.40, 15,335.55 and 6,635.12 is: 9,156.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.40 : 15,335.55 = 6,635.12 : x
  2. Step 2: Convert to fraction form
    11,112.40/15,335.55 = 6,635.12/x
  3. Step 3: Cross multiply
    11,112.40x = 15,335.55 × 6,635.12
  4. Step 4: Simplify right side
    11,112.40x = 101,753,181.34
  5. Step 5: Solve for x
    x = 101,753,181.34/11,112.40
  6. Step 6: Final answer
    x = 9,156.73

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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.