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Finding the Fourth Proportional to 17,989.16, 26,986.86 and 5,508.89

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Solution

The fourth proportional to 17,989.16, 26,986.86 and 5,508.89 is: 8,264.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.16 : 26,986.86 = 5,508.89 : x
  2. Step 2: Convert to fraction form
    17,989.16/26,986.86 = 5,508.89/x
  3. Step 3: Cross multiply
    17,989.16x = 26,986.86 × 5,508.89
  4. Step 4: Simplify right side
    17,989.16x = 148,667,643.19
  5. Step 5: Solve for x
    x = 148,667,643.19/17,989.16
  6. Step 6: Final answer
    x = 8,264.29

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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.