Home / 15,855.36-21,868.20-11,073.76

Finding the Fourth Proportional to 15,855.36, 21,868.20 and 11,073.76

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Solution

The fourth proportional to 15,855.36, 21,868.20 and 11,073.76 is: 15,273.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,855.36 : 21,868.20 = 11,073.76 : x
  2. Step 2: Convert to fraction form
    15,855.36/21,868.20 = 11,073.76/x
  3. Step 3: Cross multiply
    15,855.36x = 21,868.20 × 11,073.76
  4. Step 4: Simplify right side
    15,855.36x = 242,163,198.43
  5. Step 5: Solve for x
    x = 242,163,198.43/15,855.36
  6. Step 6: Final answer
    x = 15,273.27

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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.