Home / 14,400.81-19,872.41-8,111.97

Finding the Fourth Proportional to 14,400.81, 19,872.41 and 8,111.97

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Solution

The fourth proportional to 14,400.81, 19,872.41 and 8,111.97 is: 11,194.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,400.81 : 19,872.41 = 8,111.97 : x
  2. Step 2: Convert to fraction form
    14,400.81/19,872.41 = 8,111.97/x
  3. Step 3: Cross multiply
    14,400.81x = 19,872.41 × 8,111.97
  4. Step 4: Simplify right side
    14,400.81x = 161,204,353.19
  5. Step 5: Solve for x
    x = 161,204,353.19/14,400.81
  6. Step 6: Final answer
    x = 11,194.12

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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.