Home / 21,679.56-29,917.80-11,743.56

Finding the Fourth Proportional to 21,679.56, 29,917.80 and 11,743.56

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Solution

The fourth proportional to 21,679.56, 29,917.80 and 11,743.56 is: 16,206.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,679.56 : 29,917.80 = 11,743.56 : x
  2. Step 2: Convert to fraction form
    21,679.56/29,917.80 = 11,743.56/x
  3. Step 3: Cross multiply
    21,679.56x = 29,917.80 × 11,743.56
  4. Step 4: Simplify right side
    21,679.56x = 351,341,479.37
  5. Step 5: Solve for x
    x = 351,341,479.37/21,679.56
  6. Step 6: Final answer
    x = 16,206.12

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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.