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Finding the Fourth Proportional to 18,850.58, 28,269.38 and 9,486.98

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Solution

The fourth proportional to 18,850.58, 28,269.38 and 9,486.98 is: 14,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.58 : 28,269.38 = 9,486.98 : x
  2. Step 2: Convert to fraction form
    18,850.58/28,269.38 = 9,486.98/x
  3. Step 3: Cross multiply
    18,850.58x = 28,269.38 × 9,486.98
  4. Step 4: Simplify right side
    18,850.58x = 268,191,042.67
  5. Step 5: Solve for x
    x = 268,191,042.67/18,850.58
  6. Step 6: Final answer
    x = 14,227.20

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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.