Home / 28,208.40-38,936.18-16,279.54

Finding the Fourth Proportional to 28,208.40, 38,936.18 and 16,279.54

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Solution

The fourth proportional to 28,208.40, 38,936.18 and 16,279.54 is: 22,470.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.40 : 38,936.18 = 16,279.54 : x
  2. Step 2: Convert to fraction form
    28,208.40/38,936.18 = 16,279.54/x
  3. Step 3: Cross multiply
    28,208.40x = 38,936.18 × 16,279.54
  4. Step 4: Simplify right side
    28,208.40x = 633,863,099.76
  5. Step 5: Solve for x
    x = 633,863,099.76/28,208.40
  6. Step 6: Final answer
    x = 22,470.72

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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.