Home / 12,181.24-16,807.26-7,145.20

Finding the Fourth Proportional to 12,181.24, 16,807.26 and 7,145.20

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Solution

The fourth proportional to 12,181.24, 16,807.26 and 7,145.20 is: 9,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.24 : 16,807.26 = 7,145.20 : x
  2. Step 2: Convert to fraction form
    12,181.24/16,807.26 = 7,145.20/x
  3. Step 3: Cross multiply
    12,181.24x = 16,807.26 × 7,145.20
  4. Step 4: Simplify right side
    12,181.24x = 120,091,234.15
  5. Step 5: Solve for x
    x = 120,091,234.15/12,181.24
  6. Step 6: Final answer
    x = 9,858.70

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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.