Home / 39,728.43-54,822.53-21,824.19

Finding the Fourth Proportional to 39,728.43, 54,822.53 and 21,824.19

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Solution

The fourth proportional to 39,728.43, 54,822.53 and 21,824.19 is: 30,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,728.43 : 54,822.53 = 21,824.19 : x
  2. Step 2: Convert to fraction form
    39,728.43/54,822.53 = 21,824.19/x
  3. Step 3: Cross multiply
    39,728.43x = 54,822.53 × 21,824.19
  4. Step 4: Simplify right side
    39,728.43x = 1,196,457,311.00
  5. Step 5: Solve for x
    x = 1,196,457,311.00/39,728.43
  6. Step 6: Final answer
    x = 30,115.90

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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.