Home / 20,855.16-31,285.80-6,065.28

Finding the Fourth Proportional to 20,855.16, 31,285.80 and 6,065.28

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Solution

The fourth proportional to 20,855.16, 31,285.80 and 6,065.28 is: 9,098.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,855.16 : 31,285.80 = 6,065.28 : x
  2. Step 2: Convert to fraction form
    20,855.16/31,285.80 = 6,065.28/x
  3. Step 3: Cross multiply
    20,855.16x = 31,285.80 × 6,065.28
  4. Step 4: Simplify right side
    20,855.16x = 189,757,137.02
  5. Step 5: Solve for x
    x = 189,757,137.02/20,855.16
  6. Step 6: Final answer
    x = 9,098.81

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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.