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Finding the Fourth Proportional to 19,471.88, 26,871.20 and 11,090.00

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Solution

The fourth proportional to 19,471.88, 26,871.20 and 11,090.00 is: 15,304.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,471.88 : 26,871.20 = 11,090.00 : x
  2. Step 2: Convert to fraction form
    19,471.88/26,871.20 = 11,090.00/x
  3. Step 3: Cross multiply
    19,471.88x = 26,871.20 × 11,090.00
  4. Step 4: Simplify right side
    19,471.88x = 298,001,418.19
  5. Step 5: Solve for x
    x = 298,001,418.19/19,471.88
  6. Step 6: Final answer
    x = 15,304.20

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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.