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Finding the Fourth Proportional to 18,998.04, 28,497.54 and 9,000.44

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Solution

The fourth proportional to 18,998.04, 28,497.54 and 9,000.44 is: 13,500.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.04 : 28,497.54 = 9,000.44 : x
  2. Step 2: Convert to fraction form
    18,998.04/28,497.54 = 9,000.44/x
  3. Step 3: Cross multiply
    18,998.04x = 28,497.54 × 9,000.44
  4. Step 4: Simplify right side
    18,998.04x = 256,490,474.03
  5. Step 5: Solve for x
    x = 256,490,474.03/18,998.04
  6. Step 6: Final answer
    x = 13,500.89

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Half scale
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Double scale
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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.