Home / 23,011.32-31,755.78-12,940.20

Finding the Fourth Proportional to 23,011.32, 31,755.78 and 12,940.20

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Solution

The fourth proportional to 23,011.32, 31,755.78 and 12,940.20 is: 17,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,011.32 : 31,755.78 = 12,940.20 : x
  2. Step 2: Convert to fraction form
    23,011.32/31,755.78 = 12,940.20/x
  3. Step 3: Cross multiply
    23,011.32x = 31,755.78 × 12,940.20
  4. Step 4: Simplify right side
    23,011.32x = 410,926,144.36
  5. Step 5: Solve for x
    x = 410,926,144.36/23,011.32
  6. Step 6: Final answer
    x = 17,857.57

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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.