Home / 12,110.10-18,143.55-9,906.90

Finding the Fourth Proportional to 12,110.10, 18,143.55 and 9,906.90

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Solution

The fourth proportional to 12,110.10, 18,143.55 and 9,906.90 is: 14,842.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.10 : 18,143.55 = 9,906.90 : x
  2. Step 2: Convert to fraction form
    12,110.10/18,143.55 = 9,906.90/x
  3. Step 3: Cross multiply
    12,110.10x = 18,143.55 × 9,906.90
  4. Step 4: Simplify right side
    12,110.10x = 179,746,335.50
  5. Step 5: Solve for x
    x = 179,746,335.50/12,110.10
  6. Step 6: Final answer
    x = 14,842.68

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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.