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Finding the Fourth Proportional to 39,996.56, 59,977.56 and 12,288.08

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Solution

The fourth proportional to 39,996.56, 59,977.56 and 12,288.08 is: 18,426.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,996.56 : 59,977.56 = 12,288.08 : x
  2. Step 2: Convert to fraction form
    39,996.56/59,977.56 = 12,288.08/x
  3. Step 3: Cross multiply
    39,996.56x = 59,977.56 × 12,288.08
  4. Step 4: Simplify right side
    39,996.56x = 737,009,055.48
  5. Step 5: Solve for x
    x = 737,009,055.48/39,996.56
  6. Step 6: Final answer
    x = 18,426.81

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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.