Home / 10,916.88-15,072.12-6,726.48

Finding the Fourth Proportional to 10,916.88, 15,072.12 and 6,726.48

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Solution

The fourth proportional to 10,916.88, 15,072.12 and 6,726.48 is: 9,286.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916.88 : 15,072.12 = 6,726.48 : x
  2. Step 2: Convert to fraction form
    10,916.88/15,072.12 = 6,726.48/x
  3. Step 3: Cross multiply
    10,916.88x = 15,072.12 × 6,726.48
  4. Step 4: Simplify right side
    10,916.88x = 101,382,313.74
  5. Step 5: Solve for x
    x = 101,382,313.74/10,916.88
  6. Step 6: Final answer
    x = 9,286.75

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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.