Home / 21,157.74-29,196.66-12,208.12

Finding the Fourth Proportional to 21,157.74, 29,196.66 and 12,208.12

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Solution

The fourth proportional to 21,157.74, 29,196.66 and 12,208.12 is: 16,846.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.74 : 29,196.66 = 12,208.12 : x
  2. Step 2: Convert to fraction form
    21,157.74/29,196.66 = 12,208.12/x
  3. Step 3: Cross multiply
    21,157.74x = 29,196.66 × 12,208.12
  4. Step 4: Simplify right side
    21,157.74x = 356,436,328.88
  5. Step 5: Solve for x
    x = 356,436,328.88/21,157.74
  6. Step 6: Final answer
    x = 16,846.62

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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.