Home / 20,866.70-31,305.19-6,075.75

Finding the Fourth Proportional to 20,866.70, 31,305.19 and 6,075.75

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Solution

The fourth proportional to 20,866.70, 31,305.19 and 6,075.75 is: 9,115.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.70 : 31,305.19 = 6,075.75 : x
  2. Step 2: Convert to fraction form
    20,866.70/31,305.19 = 6,075.75/x
  3. Step 3: Cross multiply
    20,866.70x = 31,305.19 × 6,075.75
  4. Step 4: Simplify right side
    20,866.70x = 190,202,508.14
  5. Step 5: Solve for x
    x = 190,202,508.14/20,866.70
  6. Step 6: Final answer
    x = 9,115.12

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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.