Home / 39,868.50-55,021.05-21,963.54

Finding the Fourth Proportional to 39,868.50, 55,021.05 and 21,963.54

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Solution

The fourth proportional to 39,868.50, 55,021.05 and 21,963.54 is: 30,311.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868.50 : 55,021.05 = 21,963.54 : x
  2. Step 2: Convert to fraction form
    39,868.50/55,021.05 = 21,963.54/x
  3. Step 3: Cross multiply
    39,868.50x = 55,021.05 × 21,963.54
  4. Step 4: Simplify right side
    39,868.50x = 1,208,457,032.52
  5. Step 5: Solve for x
    x = 1,208,457,032.52/39,868.50
  6. Step 6: Final answer
    x = 30,311.07

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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.