Home / 20,739.65-31,113.32-11,374.56

Finding the Fourth Proportional to 20,739.65, 31,113.32 and 11,374.56

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Solution

The fourth proportional to 20,739.65, 31,113.32 and 11,374.56 is: 17,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739.65 : 31,113.32 = 11,374.56 : x
  2. Step 2: Convert to fraction form
    20,739.65/31,113.32 = 11,374.56/x
  3. Step 3: Cross multiply
    20,739.65x = 31,113.32 × 11,374.56
  4. Step 4: Simplify right side
    20,739.65x = 353,900,268.27
  5. Step 5: Solve for x
    x = 353,900,268.27/20,739.65
  6. Step 6: Final answer
    x = 17,063.95

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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.