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Finding the Fourth Proportional to 18,998.10, 28,497.15 and 17,702.10

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Solution

The fourth proportional to 18,998.10, 28,497.15 and 17,702.10 is: 26,553.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.10 : 28,497.15 = 17,702.10 : x
  2. Step 2: Convert to fraction form
    18,998.10/28,497.15 = 17,702.10/x
  3. Step 3: Cross multiply
    18,998.10x = 28,497.15 × 17,702.10
  4. Step 4: Simplify right side
    18,998.10x = 504,459,399.02
  5. Step 5: Solve for x
    x = 504,459,399.02/18,998.10
  6. Step 6: Final answer
    x = 26,553.15

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Similar ratio
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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.