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Finding the Fourth Proportional to 22,140.68, 33,220.80 and 11,608.18

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Solution

The fourth proportional to 22,140.68, 33,220.80 and 11,608.18 is: 17,417.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,140.68 : 33,220.80 = 11,608.18 : x
  2. Step 2: Convert to fraction form
    22,140.68/33,220.80 = 11,608.18/x
  3. Step 3: Cross multiply
    22,140.68x = 33,220.80 × 11,608.18
  4. Step 4: Simplify right side
    22,140.68x = 385,633,026.14
  5. Step 5: Solve for x
    x = 385,633,026.14/22,140.68
  6. Step 6: Final answer
    x = 17,417.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.