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Finding the Fourth Proportional to 21,992.25, 32,984.91 and 7,200.84

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Solution

The fourth proportional to 21,992.25, 32,984.91 and 7,200.84 is: 10,800.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,992.25 : 32,984.91 = 7,200.84 : x
  2. Step 2: Convert to fraction form
    21,992.25/32,984.91 = 7,200.84/x
  3. Step 3: Cross multiply
    21,992.25x = 32,984.91 × 7,200.84
  4. Step 4: Simplify right side
    21,992.25x = 237,519,059.32
  5. Step 5: Solve for x
    x = 237,519,059.32/21,992.25
  6. Step 6: Final answer
    x = 10,800.13

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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.