Home / 39,040.58-53,876.02-21,135.59

Finding the Fourth Proportional to 39,040.58, 53,876.02 and 21,135.59

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Solution

The fourth proportional to 39,040.58, 53,876.02 and 21,135.59 is: 29,167.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.58 : 53,876.02 = 21,135.59 : x
  2. Step 2: Convert to fraction form
    39,040.58/53,876.02 = 21,135.59/x
  3. Step 3: Cross multiply
    39,040.58x = 53,876.02 × 21,135.59
  4. Step 4: Simplify right side
    39,040.58x = 1,138,701,469.55
  5. Step 5: Solve for x
    x = 1,138,701,469.55/39,040.58
  6. Step 6: Final answer
    x = 29,167.12

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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.