Home / 11,391.84-15,719.40-6,610.68

Finding the Fourth Proportional to 11,391.84, 15,719.40 and 6,610.68

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Solution

The fourth proportional to 11,391.84, 15,719.40 and 6,610.68 is: 9,121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.84 : 15,719.40 = 6,610.68 : x
  2. Step 2: Convert to fraction form
    11,391.84/15,719.40 = 6,610.68/x
  3. Step 3: Cross multiply
    11,391.84x = 15,719.40 × 6,610.68
  4. Step 4: Simplify right side
    11,391.84x = 103,915,923.19
  5. Step 5: Solve for x
    x = 103,915,923.19/11,391.84
  6. Step 6: Final answer
    x = 9,121.96

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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.