Home / 39,040.98-53,876.54-21,135.98

Finding the Fourth Proportional to 39,040.98, 53,876.54 and 21,135.98

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Solution

The fourth proportional to 39,040.98, 53,876.54 and 21,135.98 is: 29,167.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.98 : 53,876.54 = 21,135.98 : x
  2. Step 2: Convert to fraction form
    39,040.98/53,876.54 = 21,135.98/x
  3. Step 3: Cross multiply
    39,040.98x = 53,876.54 × 21,135.98
  4. Step 4: Simplify right side
    39,040.98x = 1,138,733,471.91
  5. Step 5: Solve for x
    x = 1,138,733,471.91/39,040.98
  6. Step 6: Final answer
    x = 29,167.65

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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.