Home / 30,399.12-41,939.24-18,457.92

Finding the Fourth Proportional to 30,399.12, 41,939.24 and 18,457.92

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Solution

The fourth proportional to 30,399.12, 41,939.24 and 18,457.92 is: 25,464.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,399.12 : 41,939.24 = 18,457.92 : x
  2. Step 2: Convert to fraction form
    30,399.12/41,939.24 = 18,457.92/x
  3. Step 3: Cross multiply
    30,399.12x = 41,939.24 × 18,457.92
  4. Step 4: Simplify right side
    30,399.12x = 774,111,136.78
  5. Step 5: Solve for x
    x = 774,111,136.78/30,399.12
  6. Step 6: Final answer
    x = 25,464.92

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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.