Home / 10,921.82-15,071.61-6,679.98

Finding the Fourth Proportional to 10,921.82, 15,071.61 and 6,679.98

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Solution

The fourth proportional to 10,921.82, 15,071.61 and 6,679.98 is: 9,218.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.82 : 15,071.61 = 6,679.98 : x
  2. Step 2: Convert to fraction form
    10,921.82/15,071.61 = 6,679.98/x
  3. Step 3: Cross multiply
    10,921.82x = 15,071.61 × 6,679.98
  4. Step 4: Simplify right side
    10,921.82x = 100,678,040.84
  5. Step 5: Solve for x
    x = 100,678,040.84/10,921.82
  6. Step 6: Final answer
    x = 9,218.07

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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.