Home / 11,679.80-16,117.58-6,643.28

Finding the Fourth Proportional to 11,679.80, 16,117.58 and 6,643.28

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Solution

The fourth proportional to 11,679.80, 16,117.58 and 6,643.28 is: 9,167.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.80 : 16,117.58 = 6,643.28 : x
  2. Step 2: Convert to fraction form
    11,679.80/16,117.58 = 6,643.28/x
  3. Step 3: Cross multiply
    11,679.80x = 16,117.58 × 6,643.28
  4. Step 4: Simplify right side
    11,679.80x = 107,073,653.76
  5. Step 5: Solve for x
    x = 107,073,653.76/11,679.80
  6. Step 6: Final answer
    x = 9,167.43

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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.