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Finding the Fourth Proportional to 19,388.30, 29,081.84 and 5,537.30

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Solution

The fourth proportional to 19,388.30, 29,081.84 and 5,537.30 is: 8,305.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.30 : 29,081.84 = 5,537.30 : x
  2. Step 2: Convert to fraction form
    19,388.30/29,081.84 = 5,537.30/x
  3. Step 3: Cross multiply
    19,388.30x = 29,081.84 × 5,537.30
  4. Step 4: Simplify right side
    19,388.30x = 161,034,699.54
  5. Step 5: Solve for x
    x = 161,034,699.54/19,388.30
  6. Step 6: Final answer
    x = 8,305.77

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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.