Home / 27,781.36-38,336.80-15,203.68

Finding the Fourth Proportional to 27,781.36, 38,336.80 and 15,203.68

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Solution

The fourth proportional to 27,781.36, 38,336.80 and 15,203.68 is: 20,980.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.36 : 38,336.80 = 15,203.68 : x
  2. Step 2: Convert to fraction form
    27,781.36/38,336.80 = 15,203.68/x
  3. Step 3: Cross multiply
    27,781.36x = 38,336.80 × 15,203.68
  4. Step 4: Simplify right side
    27,781.36x = 582,860,439.42
  5. Step 5: Solve for x
    x = 582,860,439.42/27,781.36
  6. Step 6: Final answer
    x = 20,980.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.