Home / 21,324.59-31,921.27-13,913.09

Finding the Fourth Proportional to 21,324.59, 31,921.27 and 13,913.09

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Solution

The fourth proportional to 21,324.59, 31,921.27 and 13,913.09 is: 20,826.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.59 : 31,921.27 = 13,913.09 : x
  2. Step 2: Convert to fraction form
    21,324.59/31,921.27 = 13,913.09/x
  3. Step 3: Cross multiply
    21,324.59x = 31,921.27 × 13,913.09
  4. Step 4: Simplify right side
    21,324.59x = 444,123,506.00
  5. Step 5: Solve for x
    x = 444,123,506.00/21,324.59
  6. Step 6: Final answer
    x = 20,826.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.