Home / 13,854.24-20,748.96-6,912

Finding the Fourth Proportional to 13,854.24, 20,748.96 and 6,912

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Solution

The fourth proportional to 13,854.24, 20,748.96 and 6,912 is: 10,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,854.24 : 20,748.96 = 6,912 : x
  2. Step 2: Convert to fraction form
    13,854.24/20,748.96 = 6,912/x
  3. Step 3: Cross multiply
    13,854.24x = 20,748.96 × 6,912
  4. Step 4: Simplify right side
    13,854.24x = 143,416,811.52
  5. Step 5: Solve for x
    x = 143,416,811.52/13,854.24
  6. Step 6: Final answer
    x = 10,351.84

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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.