Home / 21,082.68-31,629.49-6,291.27

Finding the Fourth Proportional to 21,082.68, 31,629.49 and 6,291.27

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Solution

The fourth proportional to 21,082.68, 31,629.49 and 6,291.27 is: 9,438.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.68 : 31,629.49 = 6,291.27 : x
  2. Step 2: Convert to fraction form
    21,082.68/31,629.49 = 6,291.27/x
  3. Step 3: Cross multiply
    21,082.68x = 31,629.49 × 6,291.27
  4. Step 4: Simplify right side
    21,082.68x = 198,989,645.82
  5. Step 5: Solve for x
    x = 198,989,645.82/21,082.68
  6. Step 6: Final answer
    x = 9,438.54

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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.