Home / 11,009.61-15,214.50-8,181.09

Finding the Fourth Proportional to 11,009.61, 15,214.50 and 8,181.09

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Solution

The fourth proportional to 11,009.61, 15,214.50 and 8,181.09 is: 11,305.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,009.61 : 15,214.50 = 8,181.09 : x
  2. Step 2: Convert to fraction form
    11,009.61/15,214.50 = 8,181.09/x
  3. Step 3: Cross multiply
    11,009.61x = 15,214.50 × 8,181.09
  4. Step 4: Simplify right side
    11,009.61x = 124,471,193.81
  5. Step 5: Solve for x
    x = 124,471,193.81/11,009.61
  6. Step 6: Final answer
    x = 11,305.69

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Half scale
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Double scale
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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.