Home / 12,905.77-19,356.35-3,418.16

Finding the Fourth Proportional to 12,905.77, 19,356.35 and 3,418.16

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Solution

The fourth proportional to 12,905.77, 19,356.35 and 3,418.16 is: 5,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.77 : 19,356.35 = 3,418.16 : x
  2. Step 2: Convert to fraction form
    12,905.77/19,356.35 = 3,418.16/x
  3. Step 3: Cross multiply
    12,905.77x = 19,356.35 × 3,418.16
  4. Step 4: Simplify right side
    12,905.77x = 66,163,004.53
  5. Step 5: Solve for x
    x = 66,163,004.53/12,905.77
  6. Step 6: Final answer
    x = 5,126.62

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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.