Home / 10,539.60-15,811.95-3,144.65

Finding the Fourth Proportional to 10,539.60, 15,811.95 and 3,144.65

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Solution

The fourth proportional to 10,539.60, 15,811.95 and 3,144.65 is: 4,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,539.60 : 15,811.95 = 3,144.65 : x
  2. Step 2: Convert to fraction form
    10,539.60/15,811.95 = 3,144.65/x
  3. Step 3: Cross multiply
    10,539.60x = 15,811.95 × 3,144.65
  4. Step 4: Simplify right side
    10,539.60x = 49,722,969.51
  5. Step 5: Solve for x
    x = 49,722,969.51/10,539.60
  6. Step 6: Final answer
    x = 4,717.73

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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.