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Finding the Fourth Proportional to 17,991.95, 26,988.73 and 5,511.06

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Solution

The fourth proportional to 17,991.95, 26,988.73 and 5,511.06 is: 8,266.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.95 : 26,988.73 = 5,511.06 : x
  2. Step 2: Convert to fraction form
    17,991.95/26,988.73 = 5,511.06/x
  3. Step 3: Cross multiply
    17,991.95x = 26,988.73 × 5,511.06
  4. Step 4: Simplify right side
    17,991.95x = 148,736,496.58
  5. Step 5: Solve for x
    x = 148,736,496.58/17,991.95
  6. Step 6: Final answer
    x = 8,266.84

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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.