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Finding the Fourth Proportional to 17,210.20, 25,815.30 and 13,322.20

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Solution

The fourth proportional to 17,210.20, 25,815.30 and 13,322.20 is: 19,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,210.20 : 25,815.30 = 13,322.20 : x
  2. Step 2: Convert to fraction form
    17,210.20/25,815.30 = 13,322.20/x
  3. Step 3: Cross multiply
    17,210.20x = 25,815.30 × 13,322.20
  4. Step 4: Simplify right side
    17,210.20x = 343,916,589.66
  5. Step 5: Solve for x
    x = 343,916,589.66/17,210.20
  6. Step 6: Final answer
    x = 19,983.30

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Similar ratio
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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.