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Finding the Fourth Proportional to 17,620.74, 26,431.11 and 8,853.57

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Solution

The fourth proportional to 17,620.74, 26,431.11 and 8,853.57 is: 13,280.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,620.74 : 26,431.11 = 8,853.57 : x
  2. Step 2: Convert to fraction form
    17,620.74/26,431.11 = 8,853.57/x
  3. Step 3: Cross multiply
    17,620.74x = 26,431.11 × 8,853.57
  4. Step 4: Simplify right side
    17,620.74x = 234,009,682.56
  5. Step 5: Solve for x
    x = 234,009,682.56/17,620.74
  6. Step 6: Final answer
    x = 13,280.36

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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.