Home / 20,188.11-27,859.60-11,690.68

Finding the Fourth Proportional to 20,188.11, 27,859.60 and 11,690.68

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Solution

The fourth proportional to 20,188.11, 27,859.60 and 11,690.68 is: 16,133.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.11 : 27,859.60 = 11,690.68 : x
  2. Step 2: Convert to fraction form
    20,188.11/27,859.60 = 11,690.68/x
  3. Step 3: Cross multiply
    20,188.11x = 27,859.60 × 11,690.68
  4. Step 4: Simplify right side
    20,188.11x = 325,697,599.97
  5. Step 5: Solve for x
    x = 325,697,599.97/20,188.11
  6. Step 6: Final answer
    x = 16,133.14

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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.