Home / 21,631.32-29,850.12-12,198.06

Finding the Fourth Proportional to 21,631.32, 29,850.12 and 12,198.06

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Solution

The fourth proportional to 21,631.32, 29,850.12 and 12,198.06 is: 16,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.32 : 29,850.12 = 12,198.06 : x
  2. Step 2: Convert to fraction form
    21,631.32/29,850.12 = 12,198.06/x
  3. Step 3: Cross multiply
    21,631.32x = 29,850.12 × 12,198.06
  4. Step 4: Simplify right side
    21,631.32x = 364,113,554.77
  5. Step 5: Solve for x
    x = 364,113,554.77/21,631.32
  6. Step 6: Final answer
    x = 16,832.70

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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.