Home / 13,361.75-18,439.34-7,393.55

Finding the Fourth Proportional to 13,361.75, 18,439.34 and 7,393.55

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Solution

The fourth proportional to 13,361.75, 18,439.34 and 7,393.55 is: 10,203.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.75 : 18,439.34 = 7,393.55 : x
  2. Step 2: Convert to fraction form
    13,361.75/18,439.34 = 7,393.55/x
  3. Step 3: Cross multiply
    13,361.75x = 18,439.34 × 7,393.55
  4. Step 4: Simplify right side
    13,361.75x = 136,332,182.26
  5. Step 5: Solve for x
    x = 136,332,182.26/13,361.75
  6. Step 6: Final answer
    x = 10,203.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.