Home / 39,722.14-54,817.00-21,817.56

Finding the Fourth Proportional to 39,722.14, 54,817.00 and 21,817.56

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Solution

The fourth proportional to 39,722.14, 54,817.00 and 21,817.56 is: 30,108.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,722.14 : 54,817.00 = 21,817.56 : x
  2. Step 2: Convert to fraction form
    39,722.14/54,817.00 = 21,817.56/x
  3. Step 3: Cross multiply
    39,722.14x = 54,817.00 × 21,817.56
  4. Step 4: Simplify right side
    39,722.14x = 1,195,972,803.35
  5. Step 5: Solve for x
    x = 1,195,972,803.35/39,722.14
  6. Step 6: Final answer
    x = 30,108.47

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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.