Home / 12,968.82-19,459.31-6,391.42

Finding the Fourth Proportional to 12,968.82, 19,459.31 and 6,391.42

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Solution

The fourth proportional to 12,968.82, 19,459.31 and 6,391.42 is: 9,590.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968.82 : 19,459.31 = 6,391.42 : x
  2. Step 2: Convert to fraction form
    12,968.82/19,459.31 = 6,391.42/x
  3. Step 3: Cross multiply
    12,968.82x = 19,459.31 × 6,391.42
  4. Step 4: Simplify right side
    12,968.82x = 124,372,542.51
  5. Step 5: Solve for x
    x = 124,372,542.51/12,968.82
  6. Step 6: Final answer
    x = 9,590.12

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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.