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Finding the Fourth Proportional to 18,571.84, 27,861.86 and 6,885.06

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Solution

The fourth proportional to 18,571.84, 27,861.86 and 6,885.06 is: 10,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.84 : 27,861.86 = 6,885.06 : x
  2. Step 2: Convert to fraction form
    18,571.84/27,861.86 = 6,885.06/x
  3. Step 3: Cross multiply
    18,571.84x = 27,861.86 × 6,885.06
  4. Step 4: Simplify right side
    18,571.84x = 191,830,569.21
  5. Step 5: Solve for x
    x = 191,830,569.21/18,571.84
  6. Step 6: Final answer
    x = 10,329.11

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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.