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Finding the Fourth Proportional to 18,136.71, 27,208.54 and 6,290.02

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Solution

The fourth proportional to 18,136.71, 27,208.54 and 6,290.02 is: 9,436.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.71 : 27,208.54 = 6,290.02 : x
  2. Step 2: Convert to fraction form
    18,136.71/27,208.54 = 6,290.02/x
  3. Step 3: Cross multiply
    18,136.71x = 27,208.54 × 6,290.02
  4. Step 4: Simplify right side
    18,136.71x = 171,142,302.64
  5. Step 5: Solve for x
    x = 171,142,302.64/18,136.71
  6. Step 6: Final answer
    x = 9,436.24

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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.