Home / 21,113.44-29,137.32-11,682.08

Finding the Fourth Proportional to 21,113.44, 29,137.32 and 11,682.08

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Solution

The fourth proportional to 21,113.44, 29,137.32 and 11,682.08 is: 16,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.44 : 29,137.32 = 11,682.08 : x
  2. Step 2: Convert to fraction form
    21,113.44/29,137.32 = 11,682.08/x
  3. Step 3: Cross multiply
    21,113.44x = 29,137.32 × 11,682.08
  4. Step 4: Simplify right side
    21,113.44x = 340,384,503.23
  5. Step 5: Solve for x
    x = 340,384,503.23/21,113.44
  6. Step 6: Final answer
    x = 16,121.70

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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.