Home / 12,776.12-17,633.13-7,743.86

Finding the Fourth Proportional to 12,776.12, 17,633.13 and 7,743.86

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Solution

The fourth proportional to 12,776.12, 17,633.13 and 7,743.86 is: 10,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776.12 : 17,633.13 = 7,743.86 : x
  2. Step 2: Convert to fraction form
    12,776.12/17,633.13 = 7,743.86/x
  3. Step 3: Cross multiply
    12,776.12x = 17,633.13 × 7,743.86
  4. Step 4: Simplify right side
    12,776.12x = 136,548,490.08
  5. Step 5: Solve for x
    x = 136,548,490.08/12,776.12
  6. Step 6: Final answer
    x = 10,687.79

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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.