Home / 15,387.78-23,078.36-4,858.62

Finding the Fourth Proportional to 15,387.78, 23,078.36 and 4,858.62

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Solution

The fourth proportional to 15,387.78, 23,078.36 and 4,858.62 is: 7,286.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.78 : 23,078.36 = 4,858.62 : x
  2. Step 2: Convert to fraction form
    15,387.78/23,078.36 = 4,858.62/x
  3. Step 3: Cross multiply
    15,387.78x = 23,078.36 × 4,858.62
  4. Step 4: Simplify right side
    15,387.78x = 112,128,957.17
  5. Step 5: Solve for x
    x = 112,128,957.17/15,387.78
  6. Step 6: Final answer
    x = 7,286.88

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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.