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Finding the Fourth Proportional to 39,563.66, 54,597.95 and 21,659.82

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Solution

The fourth proportional to 39,563.66, 54,597.95 and 21,659.82 is: 29,890.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,563.66 : 54,597.95 = 21,659.82 : x
  2. Step 2: Convert to fraction form
    39,563.66/54,597.95 = 21,659.82/x
  3. Step 3: Cross multiply
    39,563.66x = 54,597.95 × 21,659.82
  4. Step 4: Simplify right side
    39,563.66x = 1,182,581,661.07
  5. Step 5: Solve for x
    x = 1,182,581,661.07/39,563.66
  6. Step 6: Final answer
    x = 29,890.61

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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.