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Finding the Fourth Proportional to 12,210.56, 18,384.62 and 11,136.56

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Solution

The fourth proportional to 12,210.56, 18,384.62 and 11,136.56 is: 16,767.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.56 : 18,384.62 = 11,136.56 : x
  2. Step 2: Convert to fraction form
    12,210.56/18,384.62 = 11,136.56/x
  3. Step 3: Cross multiply
    12,210.56x = 18,384.62 × 11,136.56
  4. Step 4: Simplify right side
    12,210.56x = 204,741,423.71
  5. Step 5: Solve for x
    x = 204,741,423.71/12,210.56
  6. Step 6: Final answer
    x = 16,767.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.