Home / 28,209.98-38,928.33-16,272.61

Finding the Fourth Proportional to 28,209.98, 38,928.33 and 16,272.61

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Solution

The fourth proportional to 28,209.98, 38,928.33 and 16,272.61 is: 22,455.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.98 : 38,928.33 = 16,272.61 : x
  2. Step 2: Convert to fraction form
    28,209.98/38,928.33 = 16,272.61/x
  3. Step 3: Cross multiply
    28,209.98x = 38,928.33 × 16,272.61
  4. Step 4: Simplify right side
    28,209.98x = 633,465,434.72
  5. Step 5: Solve for x
    x = 633,465,434.72/28,209.98
  6. Step 6: Final answer
    x = 22,455.36

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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.