Home / 21,612.56-29,826.25-12,181.13

Finding the Fourth Proportional to 21,612.56, 29,826.25 and 12,181.13

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Solution

The fourth proportional to 21,612.56, 29,826.25 and 12,181.13 is: 16,810.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.56 : 29,826.25 = 12,181.13 : x
  2. Step 2: Convert to fraction form
    21,612.56/29,826.25 = 12,181.13/x
  3. Step 3: Cross multiply
    21,612.56x = 29,826.25 × 12,181.13
  4. Step 4: Simplify right side
    21,612.56x = 363,317,249.08
  5. Step 5: Solve for x
    x = 363,317,249.08/21,612.56
  6. Step 6: Final answer
    x = 16,810.47

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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.