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Finding the Fourth Proportional to 18,620.89, 27,927.81 and 9,726.63

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Solution

The fourth proportional to 18,620.89, 27,927.81 and 9,726.63 is: 14,588.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620.89 : 27,927.81 = 9,726.63 : x
  2. Step 2: Convert to fraction form
    18,620.89/27,927.81 = 9,726.63/x
  3. Step 3: Cross multiply
    18,620.89x = 27,927.81 × 9,726.63
  4. Step 4: Simplify right side
    18,620.89x = 271,643,474.58
  5. Step 5: Solve for x
    x = 271,643,474.58/18,620.89
  6. Step 6: Final answer
    x = 14,588.10

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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.