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Finding the Fourth Proportional to 39,807.73, 54,934.76 and 21,903.89

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Solution

The fourth proportional to 39,807.73, 54,934.76 and 21,903.89 is: 30,227.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,807.73 : 54,934.76 = 21,903.89 : x
  2. Step 2: Convert to fraction form
    39,807.73/54,934.76 = 21,903.89/x
  3. Step 3: Cross multiply
    39,807.73x = 54,934.76 × 21,903.89
  4. Step 4: Simplify right side
    39,807.73x = 1,203,284,940.22
  5. Step 5: Solve for x
    x = 1,203,284,940.22/39,807.73
  6. Step 6: Final answer
    x = 30,227.42

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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.