Home / 23,170.02-31,979.91-13,611

Finding the Fourth Proportional to 23,170.02, 31,979.91 and 13,611

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Solution

The fourth proportional to 23,170.02, 31,979.91 and 13,611 is: 18,786.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,170.02 : 31,979.91 = 13,611 : x
  2. Step 2: Convert to fraction form
    23,170.02/31,979.91 = 13,611/x
  3. Step 3: Cross multiply
    23,170.02x = 31,979.91 × 13,611
  4. Step 4: Simplify right side
    23,170.02x = 435,278,555.01
  5. Step 5: Solve for x
    x = 435,278,555.01/23,170.02
  6. Step 6: Final answer
    x = 18,786.28

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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.