Home / 12,807.05-19,215.09-4,489.38

Finding the Fourth Proportional to 12,807.05, 19,215.09 and 4,489.38

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Solution

The fourth proportional to 12,807.05, 19,215.09 and 4,489.38 is: 6,735.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.05 : 19,215.09 = 4,489.38 : x
  2. Step 2: Convert to fraction form
    12,807.05/19,215.09 = 4,489.38/x
  3. Step 3: Cross multiply
    12,807.05x = 19,215.09 × 4,489.38
  4. Step 4: Simplify right side
    12,807.05x = 86,263,840.74
  5. Step 5: Solve for x
    x = 86,263,840.74/12,807.05
  6. Step 6: Final answer
    x = 6,735.66

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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.