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Finding the Fourth Proportional to 21,813.95, 32,721.11 and 9,327.53

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Solution

The fourth proportional to 21,813.95, 32,721.11 and 9,327.53 is: 13,991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.95 : 32,721.11 = 9,327.53 : x
  2. Step 2: Convert to fraction form
    21,813.95/32,721.11 = 9,327.53/x
  3. Step 3: Cross multiply
    21,813.95x = 32,721.11 × 9,327.53
  4. Step 4: Simplify right side
    21,813.95x = 305,207,135.16
  5. Step 5: Solve for x
    x = 305,207,135.16/21,813.95
  6. Step 6: Final answer
    x = 13,991.37

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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.