Home / 21,211.38-31,816.74-5,201.08

Finding the Fourth Proportional to 21,211.38, 31,816.74 and 5,201.08

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Solution

The fourth proportional to 21,211.38, 31,816.74 and 5,201.08 is: 7,801.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.38 : 31,816.74 = 5,201.08 : x
  2. Step 2: Convert to fraction form
    21,211.38/31,816.74 = 5,201.08/x
  3. Step 3: Cross multiply
    21,211.38x = 31,816.74 × 5,201.08
  4. Step 4: Simplify right side
    21,211.38x = 165,481,410.08
  5. Step 5: Solve for x
    x = 165,481,410.08/21,211.38
  6. Step 6: Final answer
    x = 7,801.54

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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.