Home / 39,722.67-54,818.28-21,819.36

Finding the Fourth Proportional to 39,722.67, 54,818.28 and 21,819.36

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Solution

The fourth proportional to 39,722.67, 54,818.28 and 21,819.36 is: 30,111.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,722.67 : 54,818.28 = 21,819.36 : x
  2. Step 2: Convert to fraction form
    39,722.67/54,818.28 = 21,819.36/x
  3. Step 3: Cross multiply
    39,722.67x = 54,818.28 × 21,819.36
  4. Step 4: Simplify right side
    39,722.67x = 1,196,099,785.90
  5. Step 5: Solve for x
    x = 1,196,099,785.90/39,722.67
  6. Step 6: Final answer
    x = 30,111.26

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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.