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Finding the Fourth Proportional to 39,603.87, 54,652.08 and 21,698.52

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Solution

The fourth proportional to 39,603.87, 54,652.08 and 21,698.52 is: 29,943.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,603.87 : 54,652.08 = 21,698.52 : x
  2. Step 2: Convert to fraction form
    39,603.87/54,652.08 = 21,698.52/x
  3. Step 3: Cross multiply
    39,603.87x = 54,652.08 × 21,698.52
  4. Step 4: Simplify right side
    39,603.87x = 1,185,869,250.92
  5. Step 5: Solve for x
    x = 1,185,869,250.92/39,603.87
  6. Step 6: Final answer
    x = 29,943.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.