Home / 15,133.67-20,882.83-8,418.22

Finding the Fourth Proportional to 15,133.67, 20,882.83 and 8,418.22

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Solution

The fourth proportional to 15,133.67, 20,882.83 and 8,418.22 is: 11,616.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.67 : 20,882.83 = 8,418.22 : x
  2. Step 2: Convert to fraction form
    15,133.67/20,882.83 = 8,418.22/x
  3. Step 3: Cross multiply
    15,133.67x = 20,882.83 × 8,418.22
  4. Step 4: Simplify right side
    15,133.67x = 175,796,257.16
  5. Step 5: Solve for x
    x = 175,796,257.16/15,133.67
  6. Step 6: Final answer
    x = 11,616.23

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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.