Home / 14,268.20-19,691.58-8,218.64

Finding the Fourth Proportional to 14,268.20, 19,691.58 and 8,218.64

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Solution

The fourth proportional to 14,268.20, 19,691.58 and 8,218.64 is: 11,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.20 : 19,691.58 = 8,218.64 : x
  2. Step 2: Convert to fraction form
    14,268.20/19,691.58 = 8,218.64/x
  3. Step 3: Cross multiply
    14,268.20x = 19,691.58 × 8,218.64
  4. Step 4: Simplify right side
    14,268.20x = 161,837,908.59
  5. Step 5: Solve for x
    x = 161,837,908.59/14,268.20
  6. Step 6: Final answer
    x = 11,342.56

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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.