Home / 21,612.50-29,825.34-12,181.22

Finding the Fourth Proportional to 21,612.50, 29,825.34 and 12,181.22

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Solution

The fourth proportional to 21,612.50, 29,825.34 and 12,181.22 is: 16,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.50 : 29,825.34 = 12,181.22 : x
  2. Step 2: Convert to fraction form
    21,612.50/29,825.34 = 12,181.22/x
  3. Step 3: Cross multiply
    21,612.50x = 29,825.34 × 12,181.22
  4. Step 4: Simplify right side
    21,612.50x = 363,309,028.11
  5. Step 5: Solve for x
    x = 363,309,028.11/21,612.50
  6. Step 6: Final answer
    x = 16,810.13

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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.