Home / 28,216.20-38,941.80-16,279.56

Finding the Fourth Proportional to 28,216.20, 38,941.80 and 16,279.56

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Solution

The fourth proportional to 28,216.20, 38,941.80 and 16,279.56 is: 22,467.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.20 : 38,941.80 = 16,279.56 : x
  2. Step 2: Convert to fraction form
    28,216.20/38,941.80 = 16,279.56/x
  3. Step 3: Cross multiply
    28,216.20x = 38,941.80 × 16,279.56
  4. Step 4: Simplify right side
    28,216.20x = 633,955,369.61
  5. Step 5: Solve for x
    x = 633,955,369.61/28,216.20
  6. Step 6: Final answer
    x = 22,467.78

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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.