Home / 39,717.88-54,810.75-21,814.06

Finding the Fourth Proportional to 39,717.88, 54,810.75 and 21,814.06

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Solution

The fourth proportional to 39,717.88, 54,810.75 and 21,814.06 is: 30,103.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,717.88 : 54,810.75 = 21,814.06 : x
  2. Step 2: Convert to fraction form
    39,717.88/54,810.75 = 21,814.06/x
  3. Step 3: Cross multiply
    39,717.88x = 54,810.75 × 21,814.06
  4. Step 4: Simplify right side
    39,717.88x = 1,195,644,989.15
  5. Step 5: Solve for x
    x = 1,195,644,989.15/39,717.88
  6. Step 6: Final answer
    x = 30,103.44

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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.