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Finding the Fourth Proportional to 18,637.55, 27,936.10 and 9,284.55

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Solution

The fourth proportional to 18,637.55, 27,936.10 and 9,284.55 is: 13,916.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.55 : 27,936.10 = 9,284.55 : x
  2. Step 2: Convert to fraction form
    18,637.55/27,936.10 = 9,284.55/x
  3. Step 3: Cross multiply
    18,637.55x = 27,936.10 × 9,284.55
  4. Step 4: Simplify right side
    18,637.55x = 259,374,117.26
  5. Step 5: Solve for x
    x = 259,374,117.26/18,637.55
  6. Step 6: Final answer
    x = 13,916.75

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1.5x scale

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.