Home / 39,999.21-55,199.09-21,850.18

Finding the Fourth Proportional to 39,999.21, 55,199.09 and 21,850.18

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Solution

The fourth proportional to 39,999.21, 55,199.09 and 21,850.18 is: 30,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,999.21 : 55,199.09 = 21,850.18 : x
  2. Step 2: Convert to fraction form
    39,999.21/55,199.09 = 21,850.18/x
  3. Step 3: Cross multiply
    39,999.21x = 55,199.09 × 21,850.18
  4. Step 4: Simplify right side
    39,999.21x = 1,206,110,052.34
  5. Step 5: Solve for x
    x = 1,206,110,052.34/39,999.21
  6. Step 6: Final answer
    x = 30,153.35

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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.