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Finding the Fourth Proportional to 22,239.60, 33,397.80 and 11,871.60

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Solution

The fourth proportional to 22,239.60, 33,397.80 and 11,871.60 is: 17,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,239.60 : 33,397.80 = 11,871.60 : x
  2. Step 2: Convert to fraction form
    22,239.60/33,397.80 = 11,871.60/x
  3. Step 3: Cross multiply
    22,239.60x = 33,397.80 × 11,871.60
  4. Step 4: Simplify right side
    22,239.60x = 396,485,322.48
  5. Step 5: Solve for x
    x = 396,485,322.48/22,239.60
  6. Step 6: Final answer
    x = 17,827.90

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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.