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Finding the Fourth Proportional to 17,801.20, 26,701.80 and 10,889.20

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Solution

The fourth proportional to 17,801.20, 26,701.80 and 10,889.20 is: 16,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,801.20 : 26,701.80 = 10,889.20 : x
  2. Step 2: Convert to fraction form
    17,801.20/26,701.80 = 10,889.20/x
  3. Step 3: Cross multiply
    17,801.20x = 26,701.80 × 10,889.20
  4. Step 4: Simplify right side
    17,801.20x = 290,761,240.56
  5. Step 5: Solve for x
    x = 290,761,240.56/17,801.20
  6. Step 6: Final answer
    x = 16,333.80

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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.