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Finding the Fourth Proportional to 19,008.25, 28,512.48 and 5,157.25

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Solution

The fourth proportional to 19,008.25, 28,512.48 and 5,157.25 is: 7,735.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.25 : 28,512.48 = 5,157.25 : x
  2. Step 2: Convert to fraction form
    19,008.25/28,512.48 = 5,157.25/x
  3. Step 3: Cross multiply
    19,008.25x = 28,512.48 × 5,157.25
  4. Step 4: Simplify right side
    19,008.25x = 147,045,987.48
  5. Step 5: Solve for x
    x = 147,045,987.48/19,008.25
  6. Step 6: Final answer
    x = 7,735.90

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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.