Home / 20,151.19-27,808.13-11,199.47

Finding the Fourth Proportional to 20,151.19, 27,808.13 and 11,199.47

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Solution

The fourth proportional to 20,151.19, 27,808.13 and 11,199.47 is: 15,454.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.19 : 27,808.13 = 11,199.47 : x
  2. Step 2: Convert to fraction form
    20,151.19/27,808.13 = 11,199.47/x
  3. Step 3: Cross multiply
    20,151.19x = 27,808.13 × 11,199.47
  4. Step 4: Simplify right side
    20,151.19x = 311,436,261.69
  5. Step 5: Solve for x
    x = 311,436,261.69/20,151.19
  6. Step 6: Final answer
    x = 15,454.98

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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.