Home / 14,091.69-19,443.63-8,121.81

Finding the Fourth Proportional to 14,091.69, 19,443.63 and 8,121.81

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Solution

The fourth proportional to 14,091.69, 19,443.63 and 8,121.81 is: 11,206.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,091.69 : 19,443.63 = 8,121.81 : x
  2. Step 2: Convert to fraction form
    14,091.69/19,443.63 = 8,121.81/x
  3. Step 3: Cross multiply
    14,091.69x = 19,443.63 × 8,121.81
  4. Step 4: Simplify right side
    14,091.69x = 157,917,468.57
  5. Step 5: Solve for x
    x = 157,917,468.57/14,091.69
  6. Step 6: Final answer
    x = 11,206.43

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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.