Home / 39,040.76-53,876.22-21,135.76

Finding the Fourth Proportional to 39,040.76, 53,876.22 and 21,135.76

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Solution

The fourth proportional to 39,040.76, 53,876.22 and 21,135.76 is: 29,167.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,040.76 : 53,876.22 = 21,135.76 : x
  2. Step 2: Convert to fraction form
    39,040.76/53,876.22 = 21,135.76/x
  3. Step 3: Cross multiply
    39,040.76x = 53,876.22 × 21,135.76
  4. Step 4: Simplify right side
    39,040.76x = 1,138,714,586.25
  5. Step 5: Solve for x
    x = 1,138,714,586.25/39,040.76
  6. Step 6: Final answer
    x = 29,167.33

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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.