Home / 39,712.61-54,804.35-21,564.09

Finding the Fourth Proportional to 39,712.61, 54,804.35 and 21,564.09

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Solution

The fourth proportional to 39,712.61, 54,804.35 and 21,564.09 is: 29,758.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,712.61 : 54,804.35 = 21,564.09 : x
  2. Step 2: Convert to fraction form
    39,712.61/54,804.35 = 21,564.09/x
  3. Step 3: Cross multiply
    39,712.61x = 54,804.35 × 21,564.09
  4. Step 4: Simplify right side
    39,712.61x = 1,181,805,989.70
  5. Step 5: Solve for x
    x = 1,181,805,989.70/39,712.61
  6. Step 6: Final answer
    x = 29,758.96

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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.