Home / 15,764.26-21,754.83-8,690.94

Finding the Fourth Proportional to 15,764.26, 21,754.83 and 8,690.94

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Solution

The fourth proportional to 15,764.26, 21,754.83 and 8,690.94 is: 11,993.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,764.26 : 21,754.83 = 8,690.94 : x
  2. Step 2: Convert to fraction form
    15,764.26/21,754.83 = 8,690.94/x
  3. Step 3: Cross multiply
    15,764.26x = 21,754.83 × 8,690.94
  4. Step 4: Simplify right side
    15,764.26x = 189,069,922.24
  5. Step 5: Solve for x
    x = 189,069,922.24/15,764.26
  6. Step 6: Final answer
    x = 11,993.58

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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.