Home / 21,095.12-31,647.48-11,229.20

Finding the Fourth Proportional to 21,095.12, 31,647.48 and 11,229.20

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Solution

The fourth proportional to 21,095.12, 31,647.48 and 11,229.20 is: 16,846.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.12 : 31,647.48 = 11,229.20 : x
  2. Step 2: Convert to fraction form
    21,095.12/31,647.48 = 11,229.20/x
  3. Step 3: Cross multiply
    21,095.12x = 31,647.48 × 11,229.20
  4. Step 4: Simplify right side
    21,095.12x = 355,375,882.42
  5. Step 5: Solve for x
    x = 355,375,882.42/21,095.12
  6. Step 6: Final answer
    x = 16,846.36

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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.