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Finding the Fourth Proportional to 18,901.56, 26,084.16 and 10,518

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Solution

The fourth proportional to 18,901.56, 26,084.16 and 10,518 is: 14,514.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901.56 : 26,084.16 = 10,518 : x
  2. Step 2: Convert to fraction form
    18,901.56/26,084.16 = 10,518/x
  3. Step 3: Cross multiply
    18,901.56x = 26,084.16 × 10,518
  4. Step 4: Simplify right side
    18,901.56x = 274,353,194.88
  5. Step 5: Solve for x
    x = 274,353,194.88/18,901.56
  6. Step 6: Final answer
    x = 14,514.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.