Home / 14,390.82-19,819.62-12,400.65

Finding the Fourth Proportional to 14,390.82, 19,819.62 and 12,400.65

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Solution

The fourth proportional to 14,390.82, 19,819.62 and 12,400.65 is: 17,078.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.82 : 19,819.62 = 12,400.65 : x
  2. Step 2: Convert to fraction form
    14,390.82/19,819.62 = 12,400.65/x
  3. Step 3: Cross multiply
    14,390.82x = 19,819.62 × 12,400.65
  4. Step 4: Simplify right side
    14,390.82x = 245,776,170.75
  5. Step 5: Solve for x
    x = 245,776,170.75/14,390.82
  6. Step 6: Final answer
    x = 17,078.68

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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.