Home / 12,698.39-19,059.87-6,129.20

Finding the Fourth Proportional to 12,698.39, 19,059.87 and 6,129.20

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Solution

The fourth proportional to 12,698.39, 19,059.87 and 6,129.20 is: 9,199.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,698.39 : 19,059.87 = 6,129.20 : x
  2. Step 2: Convert to fraction form
    12,698.39/19,059.87 = 6,129.20/x
  3. Step 3: Cross multiply
    12,698.39x = 19,059.87 × 6,129.20
  4. Step 4: Simplify right side
    12,698.39x = 116,821,755.20
  5. Step 5: Solve for x
    x = 116,821,755.20/12,698.39
  6. Step 6: Final answer
    x = 9,199.73

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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.