Home / 21,972.21-32,969.94-11,984.17

Finding the Fourth Proportional to 21,972.21, 32,969.94 and 11,984.17

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Solution

The fourth proportional to 21,972.21, 32,969.94 and 11,984.17 is: 17,982.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.21 : 32,969.94 = 11,984.17 : x
  2. Step 2: Convert to fraction form
    21,972.21/32,969.94 = 11,984.17/x
  3. Step 3: Cross multiply
    21,972.21x = 32,969.94 × 11,984.17
  4. Step 4: Simplify right side
    21,972.21x = 395,117,141.08
  5. Step 5: Solve for x
    x = 395,117,141.08/21,972.21
  6. Step 6: Final answer
    x = 17,982.59

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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.