Home / 21,137.58-29,169.87-11,706.15

Finding the Fourth Proportional to 21,137.58, 29,169.87 and 11,706.15

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Solution

The fourth proportional to 21,137.58, 29,169.87 and 11,706.15 is: 16,154.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.58 : 29,169.87 = 11,706.15 : x
  2. Step 2: Convert to fraction form
    21,137.58/29,169.87 = 11,706.15/x
  3. Step 3: Cross multiply
    21,137.58x = 29,169.87 × 11,706.15
  4. Step 4: Simplify right side
    21,137.58x = 341,466,873.70
  5. Step 5: Solve for x
    x = 341,466,873.70/21,137.58
  6. Step 6: Final answer
    x = 16,154.49

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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.