Home / 21,811.82-32,690.28-11,816.18

Finding the Fourth Proportional to 21,811.82, 32,690.28 and 11,816.18

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Solution

The fourth proportional to 21,811.82, 32,690.28 and 11,816.18 is: 17,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.82 : 32,690.28 = 11,816.18 : x
  2. Step 2: Convert to fraction form
    21,811.82/32,690.28 = 11,816.18/x
  3. Step 3: Cross multiply
    21,811.82x = 32,690.28 × 11,816.18
  4. Step 4: Simplify right side
    21,811.82x = 386,274,236.18
  5. Step 5: Solve for x
    x = 386,274,236.18/21,811.82
  6. Step 6: Final answer
    x = 17,709.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.