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Finding the Fourth Proportional to 19,888.66, 27,447.15 and 11,927.98

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Solution

The fourth proportional to 19,888.66, 27,447.15 and 11,927.98 is: 16,461.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.66 : 27,447.15 = 11,927.98 : x
  2. Step 2: Convert to fraction form
    19,888.66/27,447.15 = 11,927.98/x
  3. Step 3: Cross multiply
    19,888.66x = 27,447.15 × 11,927.98
  4. Step 4: Simplify right side
    19,888.66x = 327,389,056.26
  5. Step 5: Solve for x
    x = 327,389,056.26/19,888.66
  6. Step 6: Final answer
    x = 16,461.09

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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.