Home / 21,116.44-29,139.48-11,684.44

Finding the Fourth Proportional to 21,116.44, 29,139.48 and 11,684.44

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Solution

The fourth proportional to 21,116.44, 29,139.48 and 11,684.44 is: 16,123.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.44 : 29,139.48 = 11,684.44 : x
  2. Step 2: Convert to fraction form
    21,116.44/29,139.48 = 11,684.44/x
  3. Step 3: Cross multiply
    21,116.44x = 29,139.48 × 11,684.44
  4. Step 4: Simplify right side
    21,116.44x = 340,478,505.69
  5. Step 5: Solve for x
    x = 340,478,505.69/21,116.44
  6. Step 6: Final answer
    x = 16,123.86

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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.