Home / 21,081.80-29,091.74-11,649.76

Finding the Fourth Proportional to 21,081.80, 29,091.74 and 11,649.76

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Solution

The fourth proportional to 21,081.80, 29,091.74 and 11,649.76 is: 16,076.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.80 : 29,091.74 = 11,649.76 : x
  2. Step 2: Convert to fraction form
    21,081.80/29,091.74 = 11,649.76/x
  3. Step 3: Cross multiply
    21,081.80x = 29,091.74 × 11,649.76
  4. Step 4: Simplify right side
    21,081.80x = 338,911,788.98
  5. Step 5: Solve for x
    x = 338,911,788.98/21,081.80
  6. Step 6: Final answer
    x = 16,076.04

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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.