Home / 39,079.40-53,929.82-21,174.54

Finding the Fourth Proportional to 39,079.40, 53,929.82 and 21,174.54

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Solution

The fourth proportional to 39,079.40, 53,929.82 and 21,174.54 is: 29,221.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,079.40 : 53,929.82 = 21,174.54 : x
  2. Step 2: Convert to fraction form
    39,079.40/53,929.82 = 21,174.54/x
  3. Step 3: Cross multiply
    39,079.40x = 53,929.82 × 21,174.54
  4. Step 4: Simplify right side
    39,079.40x = 1,141,939,183.72
  5. Step 5: Solve for x
    x = 1,141,939,183.72/39,079.40
  6. Step 6: Final answer
    x = 29,221.00

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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.