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Finding the Fourth Proportional to 17,987.89, 26,981.89 and 6,298.38

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Solution

The fourth proportional to 17,987.89, 26,981.89 and 6,298.38 is: 9,447.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.89 : 26,981.89 = 6,298.38 : x
  2. Step 2: Convert to fraction form
    17,987.89/26,981.89 = 6,298.38/x
  3. Step 3: Cross multiply
    17,987.89x = 26,981.89 × 6,298.38
  4. Step 4: Simplify right side
    17,987.89x = 169,942,029.94
  5. Step 5: Solve for x
    x = 169,942,029.94/17,987.89
  6. Step 6: Final answer
    x = 9,447.58

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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.