Home / 39,039.48-53,874.91-21,134.86

Finding the Fourth Proportional to 39,039.48, 53,874.91 and 21,134.86

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Solution

The fourth proportional to 39,039.48, 53,874.91 and 21,134.86 is: 29,166.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.48 : 53,874.91 = 21,134.86 : x
  2. Step 2: Convert to fraction form
    39,039.48/53,874.91 = 21,134.86/x
  3. Step 3: Cross multiply
    39,039.48x = 53,874.91 × 21,134.86
  4. Step 4: Simplify right side
    39,039.48x = 1,138,638,680.36
  5. Step 5: Solve for x
    x = 1,138,638,680.36/39,039.48
  6. Step 6: Final answer
    x = 29,166.34

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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.