Home / 12,181.12-18,279-8,435.94

Finding the Fourth Proportional to 12,181.12, 18,279 and 8,435.94

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Solution

The fourth proportional to 12,181.12, 18,279 and 8,435.94 is: 12,658.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.12 : 18,279 = 8,435.94 : x
  2. Step 2: Convert to fraction form
    12,181.12/18,279 = 8,435.94/x
  3. Step 3: Cross multiply
    12,181.12x = 18,279 × 8,435.94
  4. Step 4: Simplify right side
    12,181.12x = 154,200,547.26
  5. Step 5: Solve for x
    x = 154,200,547.26/12,181.12
  6. Step 6: Final answer
    x = 12,658.98

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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.