Home / 28,258.08-42,388.56-9,538.80

Finding the Fourth Proportional to 28,258.08, 42,388.56 and 9,538.80

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Solution

The fourth proportional to 28,258.08, 42,388.56 and 9,538.80 is: 14,308.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.08 : 42,388.56 = 9,538.80 : x
  2. Step 2: Convert to fraction form
    28,258.08/42,388.56 = 9,538.80/x
  3. Step 3: Cross multiply
    28,258.08x = 42,388.56 × 9,538.80
  4. Step 4: Simplify right side
    28,258.08x = 404,335,996.13
  5. Step 5: Solve for x
    x = 404,335,996.13/28,258.08
  6. Step 6: Final answer
    x = 14,308.69

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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.