Home / 39,769.48-54,881.92-21,864.79

Finding the Fourth Proportional to 39,769.48, 54,881.92 and 21,864.79

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Solution

The fourth proportional to 39,769.48, 54,881.92 and 21,864.79 is: 30,173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,769.48 : 54,881.92 = 21,864.79 : x
  2. Step 2: Convert to fraction form
    39,769.48/54,881.92 = 21,864.79/x
  3. Step 3: Cross multiply
    39,769.48x = 54,881.92 × 21,864.79
  4. Step 4: Simplify right side
    39,769.48x = 1,199,981,600.93
  5. Step 5: Solve for x
    x = 1,199,981,600.93/39,769.48
  6. Step 6: Final answer
    x = 30,173.43

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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.