Home / 39,721.08-54,818.33-21,819.54

Finding the Fourth Proportional to 39,721.08, 54,818.33 and 21,819.54

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Solution

The fourth proportional to 39,721.08, 54,818.33 and 21,819.54 is: 30,112.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,721.08 : 54,818.33 = 21,819.54 : x
  2. Step 2: Convert to fraction form
    39,721.08/54,818.33 = 21,819.54/x
  3. Step 3: Cross multiply
    39,721.08x = 54,818.33 × 21,819.54
  4. Step 4: Simplify right side
    39,721.08x = 1,196,110,635.07
  5. Step 5: Solve for x
    x = 1,196,110,635.07/39,721.08
  6. Step 6: Final answer
    x = 30,112.74

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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.