Home / 20,855.16-31,281.58-5,863.28

Finding the Fourth Proportional to 20,855.16, 31,281.58 and 5,863.28

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Solution

The fourth proportional to 20,855.16, 31,281.58 and 5,863.28 is: 8,794.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.16 : 31,281.58 = 5,863.28 : x
  2. Step 2: Convert to fraction form
    20,855.16/31,281.58 = 5,863.28/x
  3. Step 3: Cross multiply
    20,855.16x = 31,281.58 × 5,863.28
  4. Step 4: Simplify right side
    20,855.16x = 183,412,662.38
  5. Step 5: Solve for x
    x = 183,412,662.38/20,855.16
  6. Step 6: Final answer
    x = 8,794.59

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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.