Home / 39,822.85-54,955.93-21,918.27

Finding the Fourth Proportional to 39,822.85, 54,955.93 and 21,918.27

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Solution

The fourth proportional to 39,822.85, 54,955.93 and 21,918.27 is: 30,247.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,822.85 : 54,955.93 = 21,918.27 : x
  2. Step 2: Convert to fraction form
    39,822.85/54,955.93 = 21,918.27/x
  3. Step 3: Cross multiply
    39,822.85x = 54,955.93 × 21,918.27
  4. Step 4: Simplify right side
    39,822.85x = 1,204,538,911.84
  5. Step 5: Solve for x
    x = 1,204,538,911.84/39,822.85
  6. Step 6: Final answer
    x = 30,247.43

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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.