Home / 18,877.16-28,291.52-7,791.64

Finding the Fourth Proportional to 18,877.16, 28,291.52 and 7,791.64

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Solution

The fourth proportional to 18,877.16, 28,291.52 and 7,791.64 is: 11,677.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.16 : 28,291.52 = 7,791.64 : x
  2. Step 2: Convert to fraction form
    18,877.16/28,291.52 = 7,791.64/x
  3. Step 3: Cross multiply
    18,877.16x = 28,291.52 × 7,791.64
  4. Step 4: Simplify right side
    18,877.16x = 220,437,287.64
  5. Step 5: Solve for x
    x = 220,437,287.64/18,877.16
  6. Step 6: Final answer
    x = 11,677.46

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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.