Home / 39,972.48-55,161.14-21,822.58

Finding the Fourth Proportional to 39,972.48, 55,161.14 and 21,822.58

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Solution

The fourth proportional to 39,972.48, 55,161.14 and 21,822.58 is: 30,114.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,972.48 : 55,161.14 = 21,822.58 : x
  2. Step 2: Convert to fraction form
    39,972.48/55,161.14 = 21,822.58/x
  3. Step 3: Cross multiply
    39,972.48x = 55,161.14 × 21,822.58
  4. Step 4: Simplify right side
    39,972.48x = 1,203,758,445.10
  5. Step 5: Solve for x
    x = 1,203,758,445.10/39,972.48
  6. Step 6: Final answer
    x = 30,114.68

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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.