Home / 21,180.92-29,229.95-11,620.20

Finding the Fourth Proportional to 21,180.92, 29,229.95 and 11,620.20

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Solution

The fourth proportional to 21,180.92, 29,229.95 and 11,620.20 is: 16,036.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.92 : 29,229.95 = 11,620.20 : x
  2. Step 2: Convert to fraction form
    21,180.92/29,229.95 = 11,620.20/x
  3. Step 3: Cross multiply
    21,180.92x = 29,229.95 × 11,620.20
  4. Step 4: Simplify right side
    21,180.92x = 339,657,806.89
  5. Step 5: Solve for x
    x = 339,657,806.89/21,180.92
  6. Step 6: Final answer
    x = 16,036.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.