Home / 21,324.10-31,986.15-7,471.30

Finding the Fourth Proportional to 21,324.10, 31,986.15 and 7,471.30

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Solution

The fourth proportional to 21,324.10, 31,986.15 and 7,471.30 is: 11,206.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.10 : 31,986.15 = 7,471.30 : x
  2. Step 2: Convert to fraction form
    21,324.10/31,986.15 = 7,471.30/x
  3. Step 3: Cross multiply
    21,324.10x = 31,986.15 × 7,471.30
  4. Step 4: Simplify right side
    21,324.10x = 238,978,122.50
  5. Step 5: Solve for x
    x = 238,978,122.50/21,324.10
  6. Step 6: Final answer
    x = 11,206.95

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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.