Home / 39,772.62-54,887.63-21,868.99

Finding the Fourth Proportional to 39,772.62, 54,887.63 and 21,868.99

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Solution

The fourth proportional to 39,772.62, 54,887.63 and 21,868.99 is: 30,179.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,772.62 : 54,887.63 = 21,868.99 : x
  2. Step 2: Convert to fraction form
    39,772.62/54,887.63 = 21,868.99/x
  3. Step 3: Cross multiply
    39,772.62x = 54,887.63 × 21,868.99
  4. Step 4: Simplify right side
    39,772.62x = 1,200,336,785.03
  5. Step 5: Solve for x
    x = 1,200,336,785.03/39,772.62
  6. Step 6: Final answer
    x = 30,179.98

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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.