Home / 12,173.36-18,261.12-4,778.06

Finding the Fourth Proportional to 12,173.36, 18,261.12 and 4,778.06

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Solution

The fourth proportional to 12,173.36, 18,261.12 and 4,778.06 is: 7,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,173.36 : 18,261.12 = 4,778.06 : x
  2. Step 2: Convert to fraction form
    12,173.36/18,261.12 = 4,778.06/x
  3. Step 3: Cross multiply
    12,173.36x = 18,261.12 × 4,778.06
  4. Step 4: Simplify right side
    12,173.36x = 87,252,727.03
  5. Step 5: Solve for x
    x = 87,252,727.03/12,173.36
  6. Step 6: Final answer
    x = 7,167.51

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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.