Home / 39,729.47-54,827.89-21,824.44

Finding the Fourth Proportional to 39,729.47, 54,827.89 and 21,824.44

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Solution

The fourth proportional to 39,729.47, 54,827.89 and 21,824.44 is: 30,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,729.47 : 54,827.89 = 21,824.44 : x
  2. Step 2: Convert to fraction form
    39,729.47/54,827.89 = 21,824.44/x
  3. Step 3: Cross multiply
    39,729.47x = 54,827.89 × 21,824.44
  4. Step 4: Simplify right side
    39,729.47x = 1,196,587,804.00
  5. Step 5: Solve for x
    x = 1,196,587,804.00/39,729.47
  6. Step 6: Final answer
    x = 30,118.40

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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.