Home / 21,611.66-29,824.89-12,181.10

Finding the Fourth Proportional to 21,611.66, 29,824.89 and 12,181.10

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Solution

The fourth proportional to 21,611.66, 29,824.89 and 12,181.10 is: 16,810.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.66 : 29,824.89 = 12,181.10 : x
  2. Step 2: Convert to fraction form
    21,611.66/29,824.89 = 12,181.10/x
  3. Step 3: Cross multiply
    21,611.66x = 29,824.89 × 12,181.10
  4. Step 4: Simplify right side
    21,611.66x = 363,299,967.58
  5. Step 5: Solve for x
    x = 363,299,967.58/21,611.66
  6. Step 6: Final answer
    x = 16,810.37

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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.