Home / 20,151.99-27,807.57-11,199.87

Finding the Fourth Proportional to 20,151.99, 27,807.57 and 11,199.87

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Solution

The fourth proportional to 20,151.99, 27,807.57 and 11,199.87 is: 15,454.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151.99 : 27,807.57 = 11,199.87 : x
  2. Step 2: Convert to fraction form
    20,151.99/27,807.57 = 11,199.87/x
  3. Step 3: Cross multiply
    20,151.99x = 27,807.57 × 11,199.87
  4. Step 4: Simplify right side
    20,151.99x = 311,441,169.02
  5. Step 5: Solve for x
    x = 311,441,169.02/20,151.99
  6. Step 6: Final answer
    x = 15,454.61

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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.