Home / 39,079.36-53,929.58-21,174.52

Finding the Fourth Proportional to 39,079.36, 53,929.58 and 21,174.52

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Solution

The fourth proportional to 39,079.36, 53,929.58 and 21,174.52 is: 29,220.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,079.36 : 53,929.58 = 21,174.52 : x
  2. Step 2: Convert to fraction form
    39,079.36/53,929.58 = 21,174.52/x
  3. Step 3: Cross multiply
    39,079.36x = 53,929.58 × 21,174.52
  4. Step 4: Simplify right side
    39,079.36x = 1,141,932,970.30
  5. Step 5: Solve for x
    x = 1,141,932,970.30/39,079.36
  6. Step 6: Final answer
    x = 29,220.87

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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.