Home / 21,243.05-29,314.83-11,682.95

Finding the Fourth Proportional to 21,243.05, 29,314.83 and 11,682.95

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Solution

The fourth proportional to 21,243.05, 29,314.83 and 11,682.95 is: 16,122.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.05 : 29,314.83 = 11,682.95 : x
  2. Step 2: Convert to fraction form
    21,243.05/29,314.83 = 11,682.95/x
  3. Step 3: Cross multiply
    21,243.05x = 29,314.83 × 11,682.95
  4. Step 4: Simplify right side
    21,243.05x = 342,483,590.39
  5. Step 5: Solve for x
    x = 342,483,590.39/21,243.05
  6. Step 6: Final answer
    x = 16,122.15

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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.