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Finding the Fourth Proportional to 18,998.54, 28,498.30 and 9,000.94

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Solution

The fourth proportional to 18,998.54, 28,498.30 and 9,000.94 is: 13,501.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.54 : 28,498.30 = 9,000.94 : x
  2. Step 2: Convert to fraction form
    18,998.54/28,498.30 = 9,000.94/x
  3. Step 3: Cross multiply
    18,998.54x = 28,498.30 × 9,000.94
  4. Step 4: Simplify right side
    18,998.54x = 256,511,443.40
  5. Step 5: Solve for x
    x = 256,511,443.40/18,998.54
  6. Step 6: Final answer
    x = 13,501.64

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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.