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Finding the Fourth Proportional to 14,478.33, 19,981.07 and 8,105.49

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Solution

The fourth proportional to 14,478.33, 19,981.07 and 8,105.49 is: 11,186.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.33 : 19,981.07 = 8,105.49 : x
  2. Step 2: Convert to fraction form
    14,478.33/19,981.07 = 8,105.49/x
  3. Step 3: Cross multiply
    14,478.33x = 19,981.07 × 8,105.49
  4. Step 4: Simplify right side
    14,478.33x = 161,956,322.55
  5. Step 5: Solve for x
    x = 161,956,322.55/14,478.33
  6. Step 6: Final answer
    x = 11,186.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.