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Finding the Fourth Proportional to 21,501.98, 32,255.04 and 8,355.38

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Solution

The fourth proportional to 21,501.98, 32,255.04 and 8,355.38 is: 12,533.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,501.98 : 32,255.04 = 8,355.38 : x
  2. Step 2: Convert to fraction form
    21,501.98/32,255.04 = 8,355.38/x
  3. Step 3: Cross multiply
    21,501.98x = 32,255.04 × 8,355.38
  4. Step 4: Simplify right side
    21,501.98x = 269,503,116.12
  5. Step 5: Solve for x
    x = 269,503,116.12/21,501.98
  6. Step 6: Final answer
    x = 12,533.87

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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.