Home / 28,713.56-43,067.46-9,991.76

Finding the Fourth Proportional to 28,713.56, 43,067.46 and 9,991.76

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Solution

The fourth proportional to 28,713.56, 43,067.46 and 9,991.76 is: 14,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.56 : 43,067.46 = 9,991.76 : x
  2. Step 2: Convert to fraction form
    28,713.56/43,067.46 = 9,991.76/x
  3. Step 3: Cross multiply
    28,713.56x = 43,067.46 × 9,991.76
  4. Step 4: Simplify right side
    28,713.56x = 430,319,724.13
  5. Step 5: Solve for x
    x = 430,319,724.13/28,713.56
  6. Step 6: Final answer
    x = 14,986.64

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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.