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Finding the Fourth Proportional to 24,489.60, 36,716.40 and 7,840.08

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Solution

The fourth proportional to 24,489.60, 36,716.40 and 7,840.08 is: 11,754.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,489.60 : 36,716.40 = 7,840.08 : x
  2. Step 2: Convert to fraction form
    24,489.60/36,716.40 = 7,840.08/x
  3. Step 3: Cross multiply
    24,489.60x = 36,716.40 × 7,840.08
  4. Step 4: Simplify right side
    24,489.60x = 287,859,513.31
  5. Step 5: Solve for x
    x = 287,859,513.31/24,489.60
  6. Step 6: Final answer
    x = 11,754.36

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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.