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Finding the Fourth Proportional to 17,205.55, 23,755.08 and 13,219.54

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Solution

The fourth proportional to 17,205.55, 23,755.08 and 13,219.54 is: 18,251.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,205.55 : 23,755.08 = 13,219.54 : x
  2. Step 2: Convert to fraction form
    17,205.55/23,755.08 = 13,219.54/x
  3. Step 3: Cross multiply
    17,205.55x = 23,755.08 × 13,219.54
  4. Step 4: Simplify right side
    17,205.55x = 314,031,230.26
  5. Step 5: Solve for x
    x = 314,031,230.26/17,205.55
  6. Step 6: Final answer
    x = 18,251.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.