Home / 20,188.73-27,860.24-11,113.80

Finding the Fourth Proportional to 20,188.73, 27,860.24 and 11,113.80

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Solution

The fourth proportional to 20,188.73, 27,860.24 and 11,113.80 is: 15,336.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.73 : 27,860.24 = 11,113.80 : x
  2. Step 2: Convert to fraction form
    20,188.73/27,860.24 = 11,113.80/x
  3. Step 3: Cross multiply
    20,188.73x = 27,860.24 × 11,113.80
  4. Step 4: Simplify right side
    20,188.73x = 309,633,079.74
  5. Step 5: Solve for x
    x = 309,633,079.74/20,188.73
  6. Step 6: Final answer
    x = 15,336.93

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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.