Home / 12,142.80-18,213.48-4,244.76

Finding the Fourth Proportional to 12,142.80, 18,213.48 and 4,244.76

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Solution

The fourth proportional to 12,142.80, 18,213.48 and 4,244.76 is: 6,366.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.80 : 18,213.48 = 4,244.76 : x
  2. Step 2: Convert to fraction form
    12,142.80/18,213.48 = 4,244.76/x
  3. Step 3: Cross multiply
    12,142.80x = 18,213.48 × 4,244.76
  4. Step 4: Simplify right side
    12,142.80x = 77,311,851.36
  5. Step 5: Solve for x
    x = 77,311,851.36/12,142.80
  6. Step 6: Final answer
    x = 6,366.89

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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.