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Finding the Fourth Proportional to 17,999.40, 27,000.18 and 5,520.18

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Solution

The fourth proportional to 17,999.40, 27,000.18 and 5,520.18 is: 8,280.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,999.40 : 27,000.18 = 5,520.18 : x
  2. Step 2: Convert to fraction form
    17,999.40/27,000.18 = 5,520.18/x
  3. Step 3: Cross multiply
    17,999.40x = 27,000.18 × 5,520.18
  4. Step 4: Simplify right side
    17,999.40x = 149,045,853.63
  5. Step 5: Solve for x
    x = 149,045,853.63/17,999.40
  6. Step 6: Final answer
    x = 8,280.60

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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.