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Finding the Fourth Proportional to 21,930.35, 32,909.59 and 21,751.99

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Solution

The fourth proportional to 21,930.35, 32,909.59 and 21,751.99 is: 32,641.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,930.35 : 32,909.59 = 21,751.99 : x
  2. Step 2: Convert to fraction form
    21,930.35/32,909.59 = 21,751.99/x
  3. Step 3: Cross multiply
    21,930.35x = 32,909.59 × 21,751.99
  4. Step 4: Simplify right side
    21,930.35x = 715,849,202.62
  5. Step 5: Solve for x
    x = 715,849,202.62/21,930.35
  6. Step 6: Final answer
    x = 32,641.95

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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.