Home / 10,657.88-15,981.96-5,113.84

Finding the Fourth Proportional to 10,657.88, 15,981.96 and 5,113.84

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Solution

The fourth proportional to 10,657.88, 15,981.96 and 5,113.84 is: 7,668.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,657.88 : 15,981.96 = 5,113.84 : x
  2. Step 2: Convert to fraction form
    10,657.88/15,981.96 = 5,113.84/x
  3. Step 3: Cross multiply
    10,657.88x = 15,981.96 × 5,113.84
  4. Step 4: Simplify right side
    10,657.88x = 81,729,143.37
  5. Step 5: Solve for x
    x = 81,729,143.37/10,657.88
  6. Step 6: Final answer
    x = 7,668.42

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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.