Home / 39,622.70-54,680.85-21,717.33

Finding the Fourth Proportional to 39,622.70, 54,680.85 and 21,717.33

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Solution

The fourth proportional to 39,622.70, 54,680.85 and 21,717.33 is: 29,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,622.70 : 54,680.85 = 21,717.33 : x
  2. Step 2: Convert to fraction form
    39,622.70/54,680.85 = 21,717.33/x
  3. Step 3: Cross multiply
    39,622.70x = 54,680.85 × 21,717.33
  4. Step 4: Simplify right side
    39,622.70x = 1,187,522,064.13
  5. Step 5: Solve for x
    x = 1,187,522,064.13/39,622.70
  6. Step 6: Final answer
    x = 29,970.75

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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.