Home / 20,151.36-27,808.92-11,199.42

Finding the Fourth Proportional to 20,151.36, 27,808.92 and 11,199.42

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Solution

The fourth proportional to 20,151.36, 27,808.92 and 11,199.42 is: 15,455.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.36 : 27,808.92 = 11,199.42 : x
  2. Step 2: Convert to fraction form
    20,151.36/27,808.92 = 11,199.42/x
  3. Step 3: Cross multiply
    20,151.36x = 27,808.92 × 11,199.42
  4. Step 4: Simplify right side
    20,151.36x = 311,443,774.83
  5. Step 5: Solve for x
    x = 311,443,774.83/20,151.36
  6. Step 6: Final answer
    x = 15,455.22

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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.