Home / 39,379.84-54,342.54-21,474.52

Finding the Fourth Proportional to 39,379.84, 54,342.54 and 21,474.52

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Solution

The fourth proportional to 39,379.84, 54,342.54 and 21,474.52 is: 29,633.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,379.84 : 54,342.54 = 21,474.52 : x
  2. Step 2: Convert to fraction form
    39,379.84/54,342.54 = 21,474.52/x
  3. Step 3: Cross multiply
    39,379.84x = 54,342.54 × 21,474.52
  4. Step 4: Simplify right side
    39,379.84x = 1,166,979,962.08
  5. Step 5: Solve for x
    x = 1,166,979,962.08/39,379.84
  6. Step 6: Final answer
    x = 29,633.94

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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.