Home / 13,261.76-19,878.40-4,936.64

Finding the Fourth Proportional to 13,261.76, 19,878.40 and 4,936.64

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Solution

The fourth proportional to 13,261.76, 19,878.40 and 4,936.64 is: 7,399.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,261.76 : 19,878.40 = 4,936.64 : x
  2. Step 2: Convert to fraction form
    13,261.76/19,878.40 = 4,936.64/x
  3. Step 3: Cross multiply
    13,261.76x = 19,878.40 × 4,936.64
  4. Step 4: Simplify right side
    13,261.76x = 98,132,504.58
  5. Step 5: Solve for x
    x = 98,132,504.58/13,261.76
  6. Step 6: Final answer
    x = 7,399.66

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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.