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Finding the Fourth Proportional to 17,157.12, 25,726.72 and 7,912.96

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Solution

The fourth proportional to 17,157.12, 25,726.72 and 7,912.96 is: 11,865.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,157.12 : 25,726.72 = 7,912.96 : x
  2. Step 2: Convert to fraction form
    17,157.12/25,726.72 = 7,912.96/x
  3. Step 3: Cross multiply
    17,157.12x = 25,726.72 × 7,912.96
  4. Step 4: Simplify right side
    17,157.12x = 203,574,506.29
  5. Step 5: Solve for x
    x = 203,574,506.29/17,157.12
  6. Step 6: Final answer
    x = 11,865.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.