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Finding the Fourth Proportional to 21,599.42, 29,811.01 and 17,157.08

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Solution

The fourth proportional to 21,599.42, 29,811.01 and 17,157.08 is: 23,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,599.42 : 29,811.01 = 17,157.08 : x
  2. Step 2: Convert to fraction form
    21,599.42/29,811.01 = 17,157.08/x
  3. Step 3: Cross multiply
    21,599.42x = 29,811.01 × 17,157.08
  4. Step 4: Simplify right side
    21,599.42x = 511,469,777.29
  5. Step 5: Solve for x
    x = 511,469,777.29/21,599.42
  6. Step 6: Final answer
    x = 23,679.79

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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.