Home / 20,929.24-31,387.38-7,075

Finding the Fourth Proportional to 20,929.24, 31,387.38 and 7,075

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Solution

The fourth proportional to 20,929.24, 31,387.38 and 7,075 is: 10,610.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.24 : 31,387.38 = 7,075 : x
  2. Step 2: Convert to fraction form
    20,929.24/31,387.38 = 7,075/x
  3. Step 3: Cross multiply
    20,929.24x = 31,387.38 × 7,075
  4. Step 4: Simplify right side
    20,929.24x = 222,065,713.50
  5. Step 5: Solve for x
    x = 222,065,713.50/20,929.24
  6. Step 6: Final answer
    x = 10,610.31

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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.