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Finding the Fourth Proportional to 18,920.80, 26,110 and 10,537.12

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Solution

The fourth proportional to 18,920.80, 26,110 and 10,537.12 is: 14,540.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.80 : 26,110 = 10,537.12 : x
  2. Step 2: Convert to fraction form
    18,920.80/26,110 = 10,537.12/x
  3. Step 3: Cross multiply
    18,920.80x = 26,110 × 10,537.12
  4. Step 4: Simplify right side
    18,920.80x = 275,124,203.20
  5. Step 5: Solve for x
    x = 275,124,203.20/18,920.80
  6. Step 6: Final answer
    x = 14,540.83

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1.5x scale

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.