Home / 18,878.67-28,314.81-5,727.87

Finding the Fourth Proportional to 18,878.67, 28,314.81 and 5,727.87

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Solution

The fourth proportional to 18,878.67, 28,314.81 and 5,727.87 is: 8,590.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.67 : 28,314.81 = 5,727.87 : x
  2. Step 2: Convert to fraction form
    18,878.67/28,314.81 = 5,727.87/x
  3. Step 3: Cross multiply
    18,878.67x = 28,314.81 × 5,727.87
  4. Step 4: Simplify right side
    18,878.67x = 162,183,550.75
  5. Step 5: Solve for x
    x = 162,183,550.75/18,878.67
  6. Step 6: Final answer
    x = 8,590.84

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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.