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Finding the Fourth Proportional to 18,571.19, 27,864.99 and 7,499.50

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Solution

The fourth proportional to 18,571.19, 27,864.99 and 7,499.50 is: 11,252.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.19 : 27,864.99 = 7,499.50 : x
  2. Step 2: Convert to fraction form
    18,571.19/27,864.99 = 7,499.50/x
  3. Step 3: Cross multiply
    18,571.19x = 27,864.99 × 7,499.50
  4. Step 4: Simplify right side
    18,571.19x = 208,973,422.84
  5. Step 5: Solve for x
    x = 208,973,422.84/18,571.19
  6. Step 6: Final answer
    x = 11,252.56

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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.