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Finding the Fourth Proportional to 19,999.98, 27,601.63 and 11,504.90

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Solution

The fourth proportional to 19,999.98, 27,601.63 and 11,504.90 is: 15,877.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.98 : 27,601.63 = 11,504.90 : x
  2. Step 2: Convert to fraction form
    19,999.98/27,601.63 = 11,504.90/x
  3. Step 3: Cross multiply
    19,999.98x = 27,601.63 × 11,504.90
  4. Step 4: Simplify right side
    19,999.98x = 317,554,033.23
  5. Step 5: Solve for x
    x = 317,554,033.23/19,999.98
  6. Step 6: Final answer
    x = 15,877.72

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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.