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Finding the Fourth Proportional to 18,883.73, 28,323.96 and 8,886.11

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Solution

The fourth proportional to 18,883.73, 28,323.96 and 8,886.11 is: 13,328.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.73 : 28,323.96 = 8,886.11 : x
  2. Step 2: Convert to fraction form
    18,883.73/28,323.96 = 8,886.11/x
  3. Step 3: Cross multiply
    18,883.73x = 28,323.96 × 8,886.11
  4. Step 4: Simplify right side
    18,883.73x = 251,689,682.58
  5. Step 5: Solve for x
    x = 251,689,682.58/18,883.73
  6. Step 6: Final answer
    x = 13,328.39

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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.