Home / 14,161.89-21,230.41-5,390.97

Finding the Fourth Proportional to 14,161.89, 21,230.41 and 5,390.97

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Solution

The fourth proportional to 14,161.89, 21,230.41 and 5,390.97 is: 8,081.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,161.89 : 21,230.41 = 5,390.97 : x
  2. Step 2: Convert to fraction form
    14,161.89/21,230.41 = 5,390.97/x
  3. Step 3: Cross multiply
    14,161.89x = 21,230.41 × 5,390.97
  4. Step 4: Simplify right side
    14,161.89x = 114,452,370.29
  5. Step 5: Solve for x
    x = 114,452,370.29/14,161.89
  6. Step 6: Final answer
    x = 8,081.72

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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.