Home / 14,067.40-21,109.20-5,308.60

Finding the Fourth Proportional to 14,067.40, 21,109.20 and 5,308.60

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Solution

The fourth proportional to 14,067.40, 21,109.20 and 5,308.60 is: 7,965.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,067.40 : 21,109.20 = 5,308.60 : x
  2. Step 2: Convert to fraction form
    14,067.40/21,109.20 = 5,308.60/x
  3. Step 3: Cross multiply
    14,067.40x = 21,109.20 × 5,308.60
  4. Step 4: Simplify right side
    14,067.40x = 112,060,299.12
  5. Step 5: Solve for x
    x = 112,060,299.12/14,067.40
  6. Step 6: Final answer
    x = 7,965.96

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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.