Home / 15,756.14-21,742.49-8,682.62

Finding the Fourth Proportional to 15,756.14, 21,742.49 and 8,682.62

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Solution

The fourth proportional to 15,756.14, 21,742.49 and 8,682.62 is: 11,981.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,756.14 : 21,742.49 = 8,682.62 : x
  2. Step 2: Convert to fraction form
    15,756.14/21,742.49 = 8,682.62/x
  3. Step 3: Cross multiply
    15,756.14x = 21,742.49 × 8,682.62
  4. Step 4: Simplify right side
    15,756.14x = 188,781,691.52
  5. Step 5: Solve for x
    x = 188,781,691.52/15,756.14
  6. Step 6: Final answer
    x = 11,981.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.