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Finding the Fourth Proportional to 19,175.96, 28,751.78 and 8,090.30

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Solution

The fourth proportional to 19,175.96, 28,751.78 and 8,090.30 is: 12,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,175.96 : 28,751.78 = 8,090.30 : x
  2. Step 2: Convert to fraction form
    19,175.96/28,751.78 = 8,090.30/x
  3. Step 3: Cross multiply
    19,175.96x = 28,751.78 × 8,090.30
  4. Step 4: Simplify right side
    19,175.96x = 232,610,525.73
  5. Step 5: Solve for x
    x = 232,610,525.73/19,175.96
  6. Step 6: Final answer
    x = 12,130.32

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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.