Home / 39,820.03-54,949.59-21,916.73

Finding the Fourth Proportional to 39,820.03, 54,949.59 and 21,916.73

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Solution

The fourth proportional to 39,820.03, 54,949.59 and 21,916.73 is: 30,243.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,820.03 : 54,949.59 = 21,916.73 : x
  2. Step 2: Convert to fraction form
    39,820.03/54,949.59 = 21,916.73/x
  3. Step 3: Cross multiply
    39,820.03x = 54,949.59 × 21,916.73
  4. Step 4: Simplify right side
    39,820.03x = 1,204,315,465.01
  5. Step 5: Solve for x
    x = 1,204,315,465.01/39,820.03
  6. Step 6: Final answer
    x = 30,243.96

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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.