Home / 12,231.24-16,878.66-6,642.12

Finding the Fourth Proportional to 12,231.24, 16,878.66 and 6,642.12

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Solution

The fourth proportional to 12,231.24, 16,878.66 and 6,642.12 is: 9,165.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.24 : 16,878.66 = 6,642.12 : x
  2. Step 2: Convert to fraction form
    12,231.24/16,878.66 = 6,642.12/x
  3. Step 3: Cross multiply
    12,231.24x = 16,878.66 × 6,642.12
  4. Step 4: Simplify right side
    12,231.24x = 112,110,085.16
  5. Step 5: Solve for x
    x = 112,110,085.16/12,231.24
  6. Step 6: Final answer
    x = 9,165.88

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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.