Home / 21,986.11-32,981.12-6,191.28

Finding the Fourth Proportional to 21,986.11, 32,981.12 and 6,191.28

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Solution

The fourth proportional to 21,986.11, 32,981.12 and 6,191.28 is: 9,287.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.11 : 32,981.12 = 6,191.28 : x
  2. Step 2: Convert to fraction form
    21,986.11/32,981.12 = 6,191.28/x
  3. Step 3: Cross multiply
    21,986.11x = 32,981.12 × 6,191.28
  4. Step 4: Simplify right side
    21,986.11x = 204,195,317.68
  5. Step 5: Solve for x
    x = 204,195,317.68/21,986.11
  6. Step 6: Final answer
    x = 9,287.47

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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.