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Finding the Fourth Proportional to 18,010.62, 26,986.77 and 13,636.62

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Solution

The fourth proportional to 18,010.62, 26,986.77 and 13,636.62 is: 20,432.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,010.62 : 26,986.77 = 13,636.62 : x
  2. Step 2: Convert to fraction form
    18,010.62/26,986.77 = 13,636.62/x
  3. Step 3: Cross multiply
    18,010.62x = 26,986.77 × 13,636.62
  4. Step 4: Simplify right side
    18,010.62x = 368,008,327.52
  5. Step 5: Solve for x
    x = 368,008,327.52/18,010.62
  6. Step 6: Final answer
    x = 20,432.85

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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.