Home / 39,822.64-54,954.02-21,917.64

Finding the Fourth Proportional to 39,822.64, 54,954.02 and 21,917.64

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Solution

The fourth proportional to 39,822.64, 54,954.02 and 21,917.64 is: 30,245.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,822.64 : 54,954.02 = 21,917.64 : x
  2. Step 2: Convert to fraction form
    39,822.64/54,954.02 = 21,917.64/x
  3. Step 3: Cross multiply
    39,822.64x = 54,954.02 × 21,917.64
  4. Step 4: Simplify right side
    39,822.64x = 1,204,462,426.91
  5. Step 5: Solve for x
    x = 1,204,462,426.91/39,822.64
  6. Step 6: Final answer
    x = 30,245.67

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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.