Home / 13,361.36-19,930.66-12,240.08

Finding the Fourth Proportional to 13,361.36, 19,930.66 and 12,240.08

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Solution

The fourth proportional to 13,361.36, 19,930.66 and 12,240.08 is: 18,258.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.36 : 19,930.66 = 12,240.08 : x
  2. Step 2: Convert to fraction form
    13,361.36/19,930.66 = 12,240.08/x
  3. Step 3: Cross multiply
    13,361.36x = 19,930.66 × 12,240.08
  4. Step 4: Simplify right side
    13,361.36x = 243,952,872.85
  5. Step 5: Solve for x
    x = 243,952,872.85/13,361.36
  6. Step 6: Final answer
    x = 18,258.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.