Home / 28,828.80-43,238.88-11,310.72

Finding the Fourth Proportional to 28,828.80, 43,238.88 and 11,310.72

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Solution

The fourth proportional to 28,828.80, 43,238.88 and 11,310.72 is: 16,964.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828.80 : 43,238.88 = 11,310.72 : x
  2. Step 2: Convert to fraction form
    28,828.80/43,238.88 = 11,310.72/x
  3. Step 3: Cross multiply
    28,828.80x = 43,238.88 × 11,310.72
  4. Step 4: Simplify right side
    28,828.80x = 489,062,864.79
  5. Step 5: Solve for x
    x = 489,062,864.79/28,828.80
  6. Step 6: Final answer
    x = 16,964.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.