Home / 21,046.20-31,569.30-11,180.40

Finding the Fourth Proportional to 21,046.20, 31,569.30 and 11,180.40

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Solution

The fourth proportional to 21,046.20, 31,569.30 and 11,180.40 is: 16,770.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.20 : 31,569.30 = 11,180.40 : x
  2. Step 2: Convert to fraction form
    21,046.20/31,569.30 = 11,180.40/x
  3. Step 3: Cross multiply
    21,046.20x = 31,569.30 × 11,180.40
  4. Step 4: Simplify right side
    21,046.20x = 352,957,401.72
  5. Step 5: Solve for x
    x = 352,957,401.72/21,046.20
  6. Step 6: Final answer
    x = 16,770.60

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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.