Home / 18,878.75-28,316.31-5,731.24

Finding the Fourth Proportional to 18,878.75, 28,316.31 and 5,731.24

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Solution

The fourth proportional to 18,878.75, 28,316.31 and 5,731.24 is: 8,596.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.75 : 28,316.31 = 5,731.24 : x
  2. Step 2: Convert to fraction form
    18,878.75/28,316.31 = 5,731.24/x
  3. Step 3: Cross multiply
    18,878.75x = 28,316.31 × 5,731.24
  4. Step 4: Simplify right side
    18,878.75x = 162,287,545.45
  5. Step 5: Solve for x
    x = 162,287,545.45/18,878.75
  6. Step 6: Final answer
    x = 8,596.31

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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.