Home / 29,979.68-41,379.20-18,040.80

Finding the Fourth Proportional to 29,979.68, 41,379.20 and 18,040.80

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Solution

The fourth proportional to 29,979.68, 41,379.20 and 18,040.80 is: 24,900.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,979.68 : 41,379.20 = 18,040.80 : x
  2. Step 2: Convert to fraction form
    29,979.68/41,379.20 = 18,040.80/x
  3. Step 3: Cross multiply
    29,979.68x = 41,379.20 × 18,040.80
  4. Step 4: Simplify right side
    29,979.68x = 746,513,871.36
  5. Step 5: Solve for x
    x = 746,513,871.36/29,979.68
  6. Step 6: Final answer
    x = 24,900.66

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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.