Home / 21,227.85-31,797.99-12,436.11

Finding the Fourth Proportional to 21,227.85, 31,797.99 and 12,436.11

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Solution

The fourth proportional to 21,227.85, 31,797.99 and 12,436.11 is: 18,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.85 : 31,797.99 = 12,436.11 : x
  2. Step 2: Convert to fraction form
    21,227.85/31,797.99 = 12,436.11/x
  3. Step 3: Cross multiply
    21,227.85x = 31,797.99 × 12,436.11
  4. Step 4: Simplify right side
    21,227.85x = 395,443,301.42
  5. Step 5: Solve for x
    x = 395,443,301.42/21,227.85
  6. Step 6: Final answer
    x = 18,628.51

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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.