Home / 16,815.12-25,226.34-5,128.02

Finding the Fourth Proportional to 16,815.12, 25,226.34 and 5,128.02

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Solution

The fourth proportional to 16,815.12, 25,226.34 and 5,128.02 is: 7,693.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.12 : 25,226.34 = 5,128.02 : x
  2. Step 2: Convert to fraction form
    16,815.12/25,226.34 = 5,128.02/x
  3. Step 3: Cross multiply
    16,815.12x = 25,226.34 × 5,128.02
  4. Step 4: Simplify right side
    16,815.12x = 129,361,176.05
  5. Step 5: Solve for x
    x = 129,361,176.05/16,815.12
  6. Step 6: Final answer
    x = 7,693.15

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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.