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Finding the Fourth Proportional to 39,896.86, 59,838.80 and 18,836.86

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Solution

The fourth proportional to 39,896.86, 59,838.80 and 18,836.86 is: 28,252.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,896.86 : 59,838.80 = 18,836.86 : x
  2. Step 2: Convert to fraction form
    39,896.86/59,838.80 = 18,836.86/x
  3. Step 3: Cross multiply
    39,896.86x = 59,838.80 × 18,836.86
  4. Step 4: Simplify right side
    39,896.86x = 1,127,175,098.17
  5. Step 5: Solve for x
    x = 1,127,175,098.17/39,896.86
  6. Step 6: Final answer
    x = 28,252.23

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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.