Home / 54,051.05-81,080.90-18,998.57

Finding the Fourth Proportional to 54,051.05, 81,080.90 and 18,998.57

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Solution

The fourth proportional to 54,051.05, 81,080.90 and 18,998.57 is: 28,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,051.05 : 81,080.90 = 18,998.57 : x
  2. Step 2: Convert to fraction form
    54,051.05/81,080.90 = 18,998.57/x
  3. Step 3: Cross multiply
    54,051.05x = 81,080.90 × 18,998.57
  4. Step 4: Simplify right side
    54,051.05x = 1,540,420,653.92
  5. Step 5: Solve for x
    x = 1,540,420,653.92/54,051.05
  6. Step 6: Final answer
    x = 28,499.37

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Half scale
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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.