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Finding the Fourth Proportional to 21,526, 32,290.20 and 7,675

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Solution

The fourth proportional to 21,526, 32,290.20 and 7,675 is: 11,512.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,526 : 32,290.20 = 7,675 : x
  2. Step 2: Convert to fraction form
    21,526/32,290.20 = 7,675/x
  3. Step 3: Cross multiply
    21,526x = 32,290.20 × 7,675
  4. Step 4: Simplify right side
    21,526x = 247,827,285
  5. Step 5: Solve for x
    x = 247,827,285/21,526
  6. Step 6: Final answer
    x = 11,512.93

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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.