Home / 12,540.24-18,811.29-4,220.22

Finding the Fourth Proportional to 12,540.24, 18,811.29 and 4,220.22

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Solution

The fourth proportional to 12,540.24, 18,811.29 and 4,220.22 is: 6,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.24 : 18,811.29 = 4,220.22 : x
  2. Step 2: Convert to fraction form
    12,540.24/18,811.29 = 4,220.22/x
  3. Step 3: Cross multiply
    12,540.24x = 18,811.29 × 4,220.22
  4. Step 4: Simplify right side
    12,540.24x = 79,387,782.28
  5. Step 5: Solve for x
    x = 79,387,782.28/12,540.24
  6. Step 6: Final answer
    x = 6,330.64

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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.