Home / 12,912.54-19,323.37-7,913.35

Finding the Fourth Proportional to 12,912.54, 19,323.37 and 7,913.35

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Solution

The fourth proportional to 12,912.54, 19,323.37 and 7,913.35 is: 11,842.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.54 : 19,323.37 = 7,913.35 : x
  2. Step 2: Convert to fraction form
    12,912.54/19,323.37 = 7,913.35/x
  3. Step 3: Cross multiply
    12,912.54x = 19,323.37 × 7,913.35
  4. Step 4: Simplify right side
    12,912.54x = 152,912,589.99
  5. Step 5: Solve for x
    x = 152,912,589.99/12,912.54
  6. Step 6: Final answer
    x = 11,842.18

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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.