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Finding the Fourth Proportional to 21,768.48, 32,622.48 and 11,359.44

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Solution

The fourth proportional to 21,768.48, 32,622.48 and 11,359.44 is: 17,023.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,768.48 : 32,622.48 = 11,359.44 : x
  2. Step 2: Convert to fraction form
    21,768.48/32,622.48 = 11,359.44/x
  3. Step 3: Cross multiply
    21,768.48x = 32,622.48 × 11,359.44
  4. Step 4: Simplify right side
    21,768.48x = 370,573,104.21
  5. Step 5: Solve for x
    x = 370,573,104.21/21,768.48
  6. Step 6: Final answer
    x = 17,023.38

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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.