Home / 28,067.60-38,720.09-16,730.64

Finding the Fourth Proportional to 28,067.60, 38,720.09 and 16,730.64

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Solution

The fourth proportional to 28,067.60, 38,720.09 and 16,730.64 is: 23,080.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.60 : 38,720.09 = 16,730.64 : x
  2. Step 2: Convert to fraction form
    28,067.60/38,720.09 = 16,730.64/x
  3. Step 3: Cross multiply
    28,067.60x = 38,720.09 × 16,730.64
  4. Step 4: Simplify right side
    28,067.60x = 647,811,928.38
  5. Step 5: Solve for x
    x = 647,811,928.38/28,067.60
  6. Step 6: Final answer
    x = 23,080.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.