Home / 21,516.12-29,671.56-13,959.66

Finding the Fourth Proportional to 21,516.12, 29,671.56 and 13,959.66

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Solution

The fourth proportional to 21,516.12, 29,671.56 and 13,959.66 is: 19,250.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.12 : 29,671.56 = 13,959.66 : x
  2. Step 2: Convert to fraction form
    21,516.12/29,671.56 = 13,959.66/x
  3. Step 3: Cross multiply
    21,516.12x = 29,671.56 × 13,959.66
  4. Step 4: Simplify right side
    21,516.12x = 414,204,889.27
  5. Step 5: Solve for x
    x = 414,204,889.27/21,516.12
  6. Step 6: Final answer
    x = 19,250.91

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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.