Home / 11,517.26-15,855.41-10,988.28

Finding the Fourth Proportional to 11,517.26, 15,855.41 and 10,988.28

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Solution

The fourth proportional to 11,517.26, 15,855.41 and 10,988.28 is: 15,127.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,517.26 : 15,855.41 = 10,988.28 : x
  2. Step 2: Convert to fraction form
    11,517.26/15,855.41 = 10,988.28/x
  3. Step 3: Cross multiply
    11,517.26x = 15,855.41 × 10,988.28
  4. Step 4: Simplify right side
    11,517.26x = 174,223,712.07
  5. Step 5: Solve for x
    x = 174,223,712.07/11,517.26
  6. Step 6: Final answer
    x = 15,127.19

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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.