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Finding the Fourth Proportional to 18,611.63, 27,917.64 and 4,760.63

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Solution

The fourth proportional to 18,611.63, 27,917.64 and 4,760.63 is: 7,140.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.63 : 27,917.64 = 4,760.63 : x
  2. Step 2: Convert to fraction form
    18,611.63/27,917.64 = 4,760.63/x
  3. Step 3: Cross multiply
    18,611.63x = 27,917.64 × 4,760.63
  4. Step 4: Simplify right side
    18,611.63x = 132,905,554.51
  5. Step 5: Solve for x
    x = 132,905,554.51/18,611.63
  6. Step 6: Final answer
    x = 7,140.99

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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.