Home / 29,728.72-41,018.90-20,169.92

Finding the Fourth Proportional to 29,728.72, 41,018.90 and 20,169.92

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Solution

The fourth proportional to 29,728.72, 41,018.90 and 20,169.92 is: 27,829.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,728.72 : 41,018.90 = 20,169.92 : x
  2. Step 2: Convert to fraction form
    29,728.72/41,018.90 = 20,169.92/x
  3. Step 3: Cross multiply
    29,728.72x = 41,018.90 × 20,169.92
  4. Step 4: Simplify right side
    29,728.72x = 827,347,931.49
  5. Step 5: Solve for x
    x = 827,347,931.49/29,728.72
  6. Step 6: Final answer
    x = 27,829.92

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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.