Home / 13,775.88-20,653.52-5,449.08

Finding the Fourth Proportional to 13,775.88, 20,653.52 and 5,449.08

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Solution

The fourth proportional to 13,775.88, 20,653.52 and 5,449.08 is: 8,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.88 : 20,653.52 = 5,449.08 : x
  2. Step 2: Convert to fraction form
    13,775.88/20,653.52 = 5,449.08/x
  3. Step 3: Cross multiply
    13,775.88x = 20,653.52 × 5,449.08
  4. Step 4: Simplify right side
    13,775.88x = 112,542,682.76
  5. Step 5: Solve for x
    x = 112,542,682.76/13,775.88
  6. Step 6: Final answer
    x = 8,169.55

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1.5x scale

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.