Home / 13,860.87-20,742.06-10,153.91

Finding the Fourth Proportional to 13,860.87, 20,742.06 and 10,153.91

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Solution

The fourth proportional to 13,860.87, 20,742.06 and 10,153.91 is: 15,194.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.87 : 20,742.06 = 10,153.91 : x
  2. Step 2: Convert to fraction form
    13,860.87/20,742.06 = 10,153.91/x
  3. Step 3: Cross multiply
    13,860.87x = 20,742.06 × 10,153.91
  4. Step 4: Simplify right side
    13,860.87x = 210,612,906.74
  5. Step 5: Solve for x
    x = 210,612,906.74/13,860.87
  6. Step 6: Final answer
    x = 15,194.78

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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.