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Finding the Fourth Proportional to 39,100.73, 53,959.07 and 21,195.68

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Solution

The fourth proportional to 39,100.73, 53,959.07 and 21,195.68 is: 29,250.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,100.73 : 53,959.07 = 21,195.68 : x
  2. Step 2: Convert to fraction form
    39,100.73/53,959.07 = 21,195.68/x
  3. Step 3: Cross multiply
    39,100.73x = 53,959.07 × 21,195.68
  4. Step 4: Simplify right side
    39,100.73x = 1,143,698,964.01
  5. Step 5: Solve for x
    x = 1,143,698,964.01/39,100.73
  6. Step 6: Final answer
    x = 29,250.07

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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.