Home / 11,156.07-15,382.94-7,171.68

Finding the Fourth Proportional to 11,156.07, 15,382.94 and 7,171.68

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Solution

The fourth proportional to 11,156.07, 15,382.94 and 7,171.68 is: 9,888.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.07 : 15,382.94 = 7,171.68 : x
  2. Step 2: Convert to fraction form
    11,156.07/15,382.94 = 7,171.68/x
  3. Step 3: Cross multiply
    11,156.07x = 15,382.94 × 7,171.68
  4. Step 4: Simplify right side
    11,156.07x = 110,321,487.28
  5. Step 5: Solve for x
    x = 110,321,487.28/11,156.07
  6. Step 6: Final answer
    x = 9,888.92

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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.