Home / 28,216.15-38,945.28-16,286.65

Finding the Fourth Proportional to 28,216.15, 38,945.28 and 16,286.65

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Solution

The fourth proportional to 28,216.15, 38,945.28 and 16,286.65 is: 22,479.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.15 : 38,945.28 = 16,286.65 : x
  2. Step 2: Convert to fraction form
    28,216.15/38,945.28 = 16,286.65/x
  3. Step 3: Cross multiply
    28,216.15x = 38,945.28 × 16,286.65
  4. Step 4: Simplify right side
    28,216.15x = 634,288,144.51
  5. Step 5: Solve for x
    x = 634,288,144.51/28,216.15
  6. Step 6: Final answer
    x = 22,479.61

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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.