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Finding the Fourth Proportional to 17,988.66, 26,986.11 and 5,508.39

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Solution

The fourth proportional to 17,988.66, 26,986.11 and 5,508.39 is: 8,263.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.66 : 26,986.11 = 5,508.39 : x
  2. Step 2: Convert to fraction form
    17,988.66/26,986.11 = 5,508.39/x
  3. Step 3: Cross multiply
    17,988.66x = 26,986.11 × 5,508.39
  4. Step 4: Simplify right side
    17,988.66x = 148,650,018.46
  5. Step 5: Solve for x
    x = 148,650,018.46/17,988.66
  6. Step 6: Final answer
    x = 8,263.54

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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.