Home / 19,933.20-29,899.80-18,118.80

Finding the Fourth Proportional to 19,933.20, 29,899.80 and 18,118.80

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Solution

The fourth proportional to 19,933.20, 29,899.80 and 18,118.80 is: 27,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,933.20 : 29,899.80 = 18,118.80 : x
  2. Step 2: Convert to fraction form
    19,933.20/29,899.80 = 18,118.80/x
  3. Step 3: Cross multiply
    19,933.20x = 29,899.80 × 18,118.80
  4. Step 4: Simplify right side
    19,933.20x = 541,748,496.24
  5. Step 5: Solve for x
    x = 541,748,496.24/19,933.20
  6. Step 6: Final answer
    x = 27,178.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.