Home / 39,712.77-54,804.00-21,808.15

Finding the Fourth Proportional to 39,712.77, 54,804.00 and 21,808.15

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Solution

The fourth proportional to 39,712.77, 54,804.00 and 21,808.15 is: 30,095.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,712.77 : 54,804.00 = 21,808.15 : x
  2. Step 2: Convert to fraction form
    39,712.77/54,804.00 = 21,808.15/x
  3. Step 3: Cross multiply
    39,712.77x = 54,804.00 × 21,808.15
  4. Step 4: Simplify right side
    39,712.77x = 1,195,173,469.54
  5. Step 5: Solve for x
    x = 1,195,173,469.54/39,712.77
  6. Step 6: Final answer
    x = 30,095.45

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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.