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Finding the Fourth Proportional to 17,988.24, 26,982.36 and 8,122.08

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Solution

The fourth proportional to 17,988.24, 26,982.36 and 8,122.08 is: 12,183.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.24 : 26,982.36 = 8,122.08 : x
  2. Step 2: Convert to fraction form
    17,988.24/26,982.36 = 8,122.08/x
  3. Step 3: Cross multiply
    17,988.24x = 26,982.36 × 8,122.08
  4. Step 4: Simplify right side
    17,988.24x = 219,152,886.51
  5. Step 5: Solve for x
    x = 219,152,886.51/17,988.24
  6. Step 6: Final answer
    x = 12,183.12

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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.