Home / 13,768.68-20,653.02-3,380.52

Finding the Fourth Proportional to 13,768.68, 20,653.02 and 3,380.52

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Solution

The fourth proportional to 13,768.68, 20,653.02 and 3,380.52 is: 5,070.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.68 : 20,653.02 = 3,380.52 : x
  2. Step 2: Convert to fraction form
    13,768.68/20,653.02 = 3,380.52/x
  3. Step 3: Cross multiply
    13,768.68x = 20,653.02 × 3,380.52
  4. Step 4: Simplify right side
    13,768.68x = 69,817,947.17
  5. Step 5: Solve for x
    x = 69,817,947.17/13,768.68
  6. Step 6: Final answer
    x = 5,070.78

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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.