Home / 28,680.40-43,020.92-8,957.52

Finding the Fourth Proportional to 28,680.40, 43,020.92 and 8,957.52

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Solution

The fourth proportional to 28,680.40, 43,020.92 and 8,957.52 is: 13,436.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.40 : 43,020.92 = 8,957.52 : x
  2. Step 2: Convert to fraction form
    28,680.40/43,020.92 = 8,957.52/x
  3. Step 3: Cross multiply
    28,680.40x = 43,020.92 × 8,957.52
  4. Step 4: Simplify right side
    28,680.40x = 385,360,751.32
  5. Step 5: Solve for x
    x = 385,360,751.32/28,680.40
  6. Step 6: Final answer
    x = 13,436.38

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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.