Home / 28,865.80-43,287.90-10,138.60

Finding the Fourth Proportional to 28,865.80, 43,287.90 and 10,138.60

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Solution

The fourth proportional to 28,865.80, 43,287.90 and 10,138.60 is: 15,204.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,865.80 : 43,287.90 = 10,138.60 : x
  2. Step 2: Convert to fraction form
    28,865.80/43,287.90 = 10,138.60/x
  3. Step 3: Cross multiply
    28,865.80x = 43,287.90 × 10,138.60
  4. Step 4: Simplify right side
    28,865.80x = 438,878,702.94
  5. Step 5: Solve for x
    x = 438,878,702.94/28,865.80
  6. Step 6: Final answer
    x = 15,204.11

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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.