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Finding the Fourth Proportional to 21,512.22, 32,248.89 and 7,651.50

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Solution

The fourth proportional to 21,512.22, 32,248.89 and 7,651.50 is: 11,470.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.22 : 32,248.89 = 7,651.50 : x
  2. Step 2: Convert to fraction form
    21,512.22/32,248.89 = 7,651.50/x
  3. Step 3: Cross multiply
    21,512.22x = 32,248.89 × 7,651.50
  4. Step 4: Simplify right side
    21,512.22x = 246,752,381.84
  5. Step 5: Solve for x
    x = 246,752,381.84/21,512.22
  6. Step 6: Final answer
    x = 11,470.34

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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.