Home / 20,717.31-31,075.97-6,866.31

Finding the Fourth Proportional to 20,717.31, 31,075.97 and 6,866.31

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Solution

The fourth proportional to 20,717.31, 31,075.97 and 6,866.31 is: 10,299.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.31 : 31,075.97 = 6,866.31 : x
  2. Step 2: Convert to fraction form
    20,717.31/31,075.97 = 6,866.31/x
  3. Step 3: Cross multiply
    20,717.31x = 31,075.97 × 6,866.31
  4. Step 4: Simplify right side
    20,717.31x = 213,377,243.57
  5. Step 5: Solve for x
    x = 213,377,243.57/20,717.31
  6. Step 6: Final answer
    x = 10,299.47

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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.