Home / 38,640.19-57,921.07-21,965.77

Finding the Fourth Proportional to 38,640.19, 57,921.07 and 21,965.77

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Solution

The fourth proportional to 38,640.19, 57,921.07 and 21,965.77 is: 32,926.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640.19 : 57,921.07 = 21,965.77 : x
  2. Step 2: Convert to fraction form
    38,640.19/57,921.07 = 21,965.77/x
  3. Step 3: Cross multiply
    38,640.19x = 57,921.07 × 21,965.77
  4. Step 4: Simplify right side
    38,640.19x = 1,272,280,749.79
  5. Step 5: Solve for x
    x = 1,272,280,749.79/38,640.19
  6. Step 6: Final answer
    x = 32,926.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.