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Finding the Fourth Proportional to 22,459.56, 33,689.42 and 21,918.28

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Solution

The fourth proportional to 22,459.56, 33,689.42 and 21,918.28 is: 32,877.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,459.56 : 33,689.42 = 21,918.28 : x
  2. Step 2: Convert to fraction form
    22,459.56/33,689.42 = 21,918.28/x
  3. Step 3: Cross multiply
    22,459.56x = 33,689.42 × 21,918.28
  4. Step 4: Simplify right side
    22,459.56x = 738,414,140.60
  5. Step 5: Solve for x
    x = 738,414,140.60/22,459.56
  6. Step 6: Final answer
    x = 32,877.50

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Similar ratio
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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.