Home / 12,678.82-19,035.48-7,136.08

Finding the Fourth Proportional to 12,678.82, 19,035.48 and 7,136.08

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Solution

The fourth proportional to 12,678.82, 19,035.48 and 7,136.08 is: 10,713.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.82 : 19,035.48 = 7,136.08 : x
  2. Step 2: Convert to fraction form
    12,678.82/19,035.48 = 7,136.08/x
  3. Step 3: Cross multiply
    12,678.82x = 19,035.48 × 7,136.08
  4. Step 4: Simplify right side
    12,678.82x = 135,838,708.12
  5. Step 5: Solve for x
    x = 135,838,708.12/12,678.82
  6. Step 6: Final answer
    x = 10,713.83

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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.