Home / 18,877.44-28,291.68-7,771.52

Finding the Fourth Proportional to 18,877.44, 28,291.68 and 7,771.52

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Solution

The fourth proportional to 18,877.44, 28,291.68 and 7,771.52 is: 11,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,877.44 : 28,291.68 = 7,771.52 : x
  2. Step 2: Convert to fraction form
    18,877.44/28,291.68 = 7,771.52/x
  3. Step 3: Cross multiply
    18,877.44x = 28,291.68 × 7,771.52
  4. Step 4: Simplify right side
    18,877.44x = 219,869,356.95
  5. Step 5: Solve for x
    x = 219,869,356.95/18,877.44
  6. Step 6: Final answer
    x = 11,647.20

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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.