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Finding the Fourth Proportional to 18,801.52, 28,196.52 and 4,948.72

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Solution

The fourth proportional to 18,801.52, 28,196.52 and 4,948.72 is: 7,421.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.52 : 28,196.52 = 4,948.72 : x
  2. Step 2: Convert to fraction form
    18,801.52/28,196.52 = 4,948.72/x
  3. Step 3: Cross multiply
    18,801.52x = 28,196.52 × 4,948.72
  4. Step 4: Simplify right side
    18,801.52x = 139,536,682.45
  5. Step 5: Solve for x
    x = 139,536,682.45/18,801.52
  6. Step 6: Final answer
    x = 7,421.56

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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.