Home / 28,245.11-38,979.63-16,309.55

Finding the Fourth Proportional to 28,245.11, 38,979.63 and 16,309.55

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Solution

The fourth proportional to 28,245.11, 38,979.63 and 16,309.55 is: 22,507.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.11 : 38,979.63 = 16,309.55 : x
  2. Step 2: Convert to fraction form
    28,245.11/38,979.63 = 16,309.55/x
  3. Step 3: Cross multiply
    28,245.11x = 38,979.63 × 16,309.55
  4. Step 4: Simplify right side
    28,245.11x = 635,740,321.92
  5. Step 5: Solve for x
    x = 635,740,321.92/28,245.11
  6. Step 6: Final answer
    x = 22,507.98

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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.