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Finding the Fourth Proportional to 12,537.79, 18,809.21 and 3,653.10

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Solution

The fourth proportional to 12,537.79, 18,809.21 and 3,653.10 is: 5,480.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,537.79 : 18,809.21 = 3,653.10 : x
  2. Step 2: Convert to fraction form
    12,537.79/18,809.21 = 3,653.10/x
  3. Step 3: Cross multiply
    12,537.79x = 18,809.21 × 3,653.10
  4. Step 4: Simplify right side
    12,537.79x = 68,711,934.18
  5. Step 5: Solve for x
    x = 68,711,934.18/12,537.79
  6. Step 6: Final answer
    x = 5,480.39

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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.