Home / 20,181.84-27,864.66-12,631.24

Finding the Fourth Proportional to 20,181.84, 27,864.66 and 12,631.24

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Solution

The fourth proportional to 20,181.84, 27,864.66 and 12,631.24 is: 17,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.84 : 27,864.66 = 12,631.24 : x
  2. Step 2: Convert to fraction form
    20,181.84/27,864.66 = 12,631.24/x
  3. Step 3: Cross multiply
    20,181.84x = 27,864.66 × 12,631.24
  4. Step 4: Simplify right side
    20,181.84x = 351,965,207.98
  5. Step 5: Solve for x
    x = 351,965,207.98/20,181.84
  6. Step 6: Final answer
    x = 17,439.70

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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.