Home / 39,729.12-54,823.48-21,824.88

Finding the Fourth Proportional to 39,729.12, 54,823.48 and 21,824.88

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Solution

The fourth proportional to 39,729.12, 54,823.48 and 21,824.88 is: 30,116.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,729.12 : 54,823.48 = 21,824.88 : x
  2. Step 2: Convert to fraction form
    39,729.12/54,823.48 = 21,824.88/x
  3. Step 3: Cross multiply
    39,729.12x = 54,823.48 × 21,824.88
  4. Step 4: Simplify right side
    39,729.12x = 1,196,515,612.03
  5. Step 5: Solve for x
    x = 1,196,515,612.03/39,729.12
  6. Step 6: Final answer
    x = 30,116.84

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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.