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Finding the Fourth Proportional to 18,601.20, 27,888.42 and 8,734.99

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Solution

The fourth proportional to 18,601.20, 27,888.42 and 8,734.99 is: 13,096.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.20 : 27,888.42 = 8,734.99 : x
  2. Step 2: Convert to fraction form
    18,601.20/27,888.42 = 8,734.99/x
  3. Step 3: Cross multiply
    18,601.20x = 27,888.42 × 8,734.99
  4. Step 4: Simplify right side
    18,601.20x = 243,605,069.82
  5. Step 5: Solve for x
    x = 243,605,069.82/18,601.20
  6. Step 6: Final answer
    x = 13,096.20

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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.