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Finding the Fourth Proportional to 19,691.09, 27,174.37 and 10,739.09

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Solution

The fourth proportional to 19,691.09, 27,174.37 and 10,739.09 is: 14,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.09 : 27,174.37 = 10,739.09 : x
  2. Step 2: Convert to fraction form
    19,691.09/27,174.37 = 10,739.09/x
  3. Step 3: Cross multiply
    19,691.09x = 27,174.37 × 10,739.09
  4. Step 4: Simplify right side
    19,691.09x = 291,827,842.40
  5. Step 5: Solve for x
    x = 291,827,842.40/19,691.09
  6. Step 6: Final answer
    x = 14,820.30

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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.