Home / 14,391.82-19,821-12,401.65

Finding the Fourth Proportional to 14,391.82, 19,821 and 12,401.65

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Solution

The fourth proportional to 14,391.82, 19,821 and 12,401.65 is: 17,080.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.82 : 19,821 = 12,401.65 : x
  2. Step 2: Convert to fraction form
    14,391.82/19,821 = 12,401.65/x
  3. Step 3: Cross multiply
    14,391.82x = 19,821 × 12,401.65
  4. Step 4: Simplify right side
    14,391.82x = 245,813,104.65
  5. Step 5: Solve for x
    x = 245,813,104.65/14,391.82
  6. Step 6: Final answer
    x = 17,080.06

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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.