Home / 13,768.64-20,655.84-6,839.36

Finding the Fourth Proportional to 13,768.64, 20,655.84 and 6,839.36

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Solution

The fourth proportional to 13,768.64, 20,655.84 and 6,839.36 is: 10,260.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.64 : 20,655.84 = 6,839.36 : x
  2. Step 2: Convert to fraction form
    13,768.64/20,655.84 = 6,839.36/x
  3. Step 3: Cross multiply
    13,768.64x = 20,655.84 × 6,839.36
  4. Step 4: Simplify right side
    13,768.64x = 141,272,725.86
  5. Step 5: Solve for x
    x = 141,272,725.86/13,768.64
  6. Step 6: Final answer
    x = 10,260.47

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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.