Home / 12,905.91-19,376.73-6,670.53

Finding the Fourth Proportional to 12,905.91, 19,376.73 and 6,670.53

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Solution

The fourth proportional to 12,905.91, 19,376.73 and 6,670.53 is: 10,015.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.91 : 19,376.73 = 6,670.53 : x
  2. Step 2: Convert to fraction form
    12,905.91/19,376.73 = 6,670.53/x
  3. Step 3: Cross multiply
    12,905.91x = 19,376.73 × 6,670.53
  4. Step 4: Simplify right side
    12,905.91x = 129,253,058.77
  5. Step 5: Solve for x
    x = 129,253,058.77/12,905.91
  6. Step 6: Final answer
    x = 10,015.03

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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.