Home / 20,018.16-27,629.28-11,521.44

Finding the Fourth Proportional to 20,018.16, 27,629.28 and 11,521.44

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Solution

The fourth proportional to 20,018.16, 27,629.28 and 11,521.44 is: 15,902.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,018.16 : 27,629.28 = 11,521.44 : x
  2. Step 2: Convert to fraction form
    20,018.16/27,629.28 = 11,521.44/x
  3. Step 3: Cross multiply
    20,018.16x = 27,629.28 × 11,521.44
  4. Step 4: Simplify right side
    20,018.16x = 318,329,091.76
  5. Step 5: Solve for x
    x = 318,329,091.76/20,018.16
  6. Step 6: Final answer
    x = 15,902.02

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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.