Home / 39,717.72-54,811.08-21,814.56

Finding the Fourth Proportional to 39,717.72, 54,811.08 and 21,814.56

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Solution

The fourth proportional to 39,717.72, 54,811.08 and 21,814.56 is: 30,104.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,717.72 : 54,811.08 = 21,814.56 : x
  2. Step 2: Convert to fraction form
    39,717.72/54,811.08 = 21,814.56/x
  3. Step 3: Cross multiply
    39,717.72x = 54,811.08 × 21,814.56
  4. Step 4: Simplify right side
    39,717.72x = 1,195,679,593.32
  5. Step 5: Solve for x
    x = 1,195,679,593.32/39,717.72
  6. Step 6: Final answer
    x = 30,104.44

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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.