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Finding the Fourth Proportional to 22,218.40, 33,327.60 and 20,749.60

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Solution

The fourth proportional to 22,218.40, 33,327.60 and 20,749.60 is: 31,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,218.40 : 33,327.60 = 20,749.60 : x
  2. Step 2: Convert to fraction form
    22,218.40/33,327.60 = 20,749.60/x
  3. Step 3: Cross multiply
    22,218.40x = 33,327.60 × 20,749.60
  4. Step 4: Simplify right side
    22,218.40x = 691,534,368.96
  5. Step 5: Solve for x
    x = 691,534,368.96/22,218.40
  6. Step 6: Final answer
    x = 31,124.40

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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.