Home / 39,004.83-53,826.69-21,099.78

Finding the Fourth Proportional to 39,004.83, 53,826.69 and 21,099.78

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Solution

The fourth proportional to 39,004.83, 53,826.69 and 21,099.78 is: 29,117.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,004.83 : 53,826.69 = 21,099.78 : x
  2. Step 2: Convert to fraction form
    39,004.83/53,826.69 = 21,099.78/x
  3. Step 3: Cross multiply
    39,004.83x = 53,826.69 × 21,099.78
  4. Step 4: Simplify right side
    39,004.83x = 1,135,731,317.13
  5. Step 5: Solve for x
    x = 1,135,731,317.13/39,004.83
  6. Step 6: Final answer
    x = 29,117.71

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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.