Home / 12,181.20-16,798.50-8,398.32

Finding the Fourth Proportional to 12,181.20, 16,798.50 and 8,398.32

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Solution

The fourth proportional to 12,181.20, 16,798.50 and 8,398.32 is: 11,581.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.20 : 16,798.50 = 8,398.32 : x
  2. Step 2: Convert to fraction form
    12,181.20/16,798.50 = 8,398.32/x
  3. Step 3: Cross multiply
    12,181.20x = 16,798.50 × 8,398.32
  4. Step 4: Simplify right side
    12,181.20x = 141,079,178.52
  5. Step 5: Solve for x
    x = 141,079,178.52/12,181.20
  6. Step 6: Final answer
    x = 11,581.71

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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.