Home / 12,555.96-18,833.94-9,115.08

Finding the Fourth Proportional to 12,555.96, 18,833.94 and 9,115.08

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Solution

The fourth proportional to 12,555.96, 18,833.94 and 9,115.08 is: 13,672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.96 : 18,833.94 = 9,115.08 : x
  2. Step 2: Convert to fraction form
    12,555.96/18,833.94 = 9,115.08/x
  3. Step 3: Cross multiply
    12,555.96x = 18,833.94 × 9,115.08
  4. Step 4: Simplify right side
    12,555.96x = 171,672,869.82
  5. Step 5: Solve for x
    x = 171,672,869.82/12,555.96
  6. Step 6: Final answer
    x = 13,672.62

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Double scale
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Similar ratio
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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.