Home / 21,899.87-30,186.32-17,111.44

Finding the Fourth Proportional to 21,899.87, 30,186.32 and 17,111.44

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Solution

The fourth proportional to 21,899.87, 30,186.32 and 17,111.44 is: 23,586.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.87 : 30,186.32 = 17,111.44 : x
  2. Step 2: Convert to fraction form
    21,899.87/30,186.32 = 17,111.44/x
  3. Step 3: Cross multiply
    21,899.87x = 30,186.32 × 17,111.44
  4. Step 4: Simplify right side
    21,899.87x = 516,531,242.48
  5. Step 5: Solve for x
    x = 516,531,242.48/21,899.87
  6. Step 6: Final answer
    x = 23,586.05

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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.