Home / 39,039.83-53,874.32-21,134.68

Finding the Fourth Proportional to 39,039.83, 53,874.32 and 21,134.68

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Solution

The fourth proportional to 39,039.83, 53,874.32 and 21,134.68 is: 29,165.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.83 : 53,874.32 = 21,134.68 : x
  2. Step 2: Convert to fraction form
    39,039.83/53,874.32 = 21,134.68/x
  3. Step 3: Cross multiply
    39,039.83x = 53,874.32 × 21,134.68
  4. Step 4: Simplify right side
    39,039.83x = 1,138,616,273.06
  5. Step 5: Solve for x
    x = 1,138,616,273.06/39,039.83
  6. Step 6: Final answer
    x = 29,165.51

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1.5x scale

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.