Home / 10,539.59-15,811.43-3,143.88

Finding the Fourth Proportional to 10,539.59, 15,811.43 and 3,143.88

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Solution

The fourth proportional to 10,539.59, 15,811.43 and 3,143.88 is: 4,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,539.59 : 15,811.43 = 3,143.88 : x
  2. Step 2: Convert to fraction form
    10,539.59/15,811.43 = 3,143.88/x
  3. Step 3: Cross multiply
    10,539.59x = 15,811.43 × 3,143.88
  4. Step 4: Simplify right side
    10,539.59x = 49,709,222.83
  5. Step 5: Solve for x
    x = 49,709,222.83/10,539.59
  6. Step 6: Final answer
    x = 4,716.43

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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.