Home / 39,819.52-54,948.86-21,911.06

Finding the Fourth Proportional to 39,819.52, 54,948.86 and 21,911.06

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Solution

The fourth proportional to 39,819.52, 54,948.86 and 21,911.06 is: 30,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,819.52 : 54,948.86 = 21,911.06 : x
  2. Step 2: Convert to fraction form
    39,819.52/54,948.86 = 21,911.06/x
  3. Step 3: Cross multiply
    39,819.52x = 54,948.86 × 21,911.06
  4. Step 4: Simplify right side
    39,819.52x = 1,203,987,768.39
  5. Step 5: Solve for x
    x = 1,203,987,768.39/39,819.52
  6. Step 6: Final answer
    x = 30,236.12

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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.