Home / 30,129.30-41,571.23-21,629.97

Finding the Fourth Proportional to 30,129.30, 41,571.23 and 21,629.97

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Solution

The fourth proportional to 30,129.30, 41,571.23 and 21,629.97 is: 29,844.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.30 : 41,571.23 = 21,629.97 : x
  2. Step 2: Convert to fraction form
    30,129.30/41,571.23 = 21,629.97/x
  3. Step 3: Cross multiply
    30,129.30x = 41,571.23 × 21,629.97
  4. Step 4: Simplify right side
    30,129.30x = 899,184,349.61
  5. Step 5: Solve for x
    x = 899,184,349.61/30,129.30
  6. Step 6: Final answer
    x = 29,844.18

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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.