Home / 12,928.74-19,388.31-4,606.55

Finding the Fourth Proportional to 12,928.74, 19,388.31 and 4,606.55

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Solution

The fourth proportional to 12,928.74, 19,388.31 and 4,606.55 is: 6,908.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.74 : 19,388.31 = 4,606.55 : x
  2. Step 2: Convert to fraction form
    12,928.74/19,388.31 = 4,606.55/x
  3. Step 3: Cross multiply
    12,928.74x = 19,388.31 × 4,606.55
  4. Step 4: Simplify right side
    12,928.74x = 89,313,177.92
  5. Step 5: Solve for x
    x = 89,313,177.92/12,928.74
  6. Step 6: Final answer
    x = 6,908.11

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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.