Home / 21,145.10-29,181.42-12,073.14

Finding the Fourth Proportional to 21,145.10, 29,181.42 and 12,073.14

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Solution

The fourth proportional to 21,145.10, 29,181.42 and 12,073.14 is: 16,661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.10 : 29,181.42 = 12,073.14 : x
  2. Step 2: Convert to fraction form
    21,145.10/29,181.42 = 12,073.14/x
  3. Step 3: Cross multiply
    21,145.10x = 29,181.42 × 12,073.14
  4. Step 4: Simplify right side
    21,145.10x = 352,311,369.06
  5. Step 5: Solve for x
    x = 352,311,369.06/21,145.10
  6. Step 6: Final answer
    x = 16,661.61

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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.