Home / 18,987.55-28,481.79-5,840.02

Finding the Fourth Proportional to 18,987.55, 28,481.79 and 5,840.02

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Solution

The fourth proportional to 18,987.55, 28,481.79 and 5,840.02 is: 8,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.55 : 28,481.79 = 5,840.02 : x
  2. Step 2: Convert to fraction form
    18,987.55/28,481.79 = 5,840.02/x
  3. Step 3: Cross multiply
    18,987.55x = 28,481.79 × 5,840.02
  4. Step 4: Simplify right side
    18,987.55x = 166,334,223.24
  5. Step 5: Solve for x
    x = 166,334,223.24/18,987.55
  6. Step 6: Final answer
    x = 8,760.17

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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.