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Finding the Fourth Proportional to 17,993.70, 26,987.49 and 8,130.69

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Solution

The fourth proportional to 17,993.70, 26,987.49 and 8,130.69 is: 12,194.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,993.70 : 26,987.49 = 8,130.69 : x
  2. Step 2: Convert to fraction form
    17,993.70/26,987.49 = 8,130.69/x
  3. Step 3: Cross multiply
    17,993.70x = 26,987.49 × 8,130.69
  4. Step 4: Simplify right side
    17,993.70x = 219,426,915.07
  5. Step 5: Solve for x
    x = 219,426,915.07/17,993.70
  6. Step 6: Final answer
    x = 12,194.65

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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.