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Finding the Fourth Proportional to 21,950.88, 32,897.63 and 8,812.49

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Solution

The fourth proportional to 21,950.88, 32,897.63 and 8,812.49 is: 13,207.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.88 : 32,897.63 = 8,812.49 : x
  2. Step 2: Convert to fraction form
    21,950.88/32,897.63 = 8,812.49/x
  3. Step 3: Cross multiply
    21,950.88x = 32,897.63 × 8,812.49
  4. Step 4: Simplify right side
    21,950.88x = 289,909,826.85
  5. Step 5: Solve for x
    x = 289,909,826.85/21,950.88
  6. Step 6: Final answer
    x = 13,207.21

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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.