Home / 13,378.60-20,080.24-6,809.52

Finding the Fourth Proportional to 13,378.60, 20,080.24 and 6,809.52

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Solution

The fourth proportional to 13,378.60, 20,080.24 and 6,809.52 is: 10,220.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.60 : 20,080.24 = 6,809.52 : x
  2. Step 2: Convert to fraction form
    13,378.60/20,080.24 = 6,809.52/x
  3. Step 3: Cross multiply
    13,378.60x = 20,080.24 × 6,809.52
  4. Step 4: Simplify right side
    13,378.60x = 136,736,795.88
  5. Step 5: Solve for x
    x = 136,736,795.88/13,378.60
  6. Step 6: Final answer
    x = 10,220.56

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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.