Home / 13,485.06-18,611.81-8,453.64

Finding the Fourth Proportional to 13,485.06, 18,611.81 and 8,453.64

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Solution

The fourth proportional to 13,485.06, 18,611.81 and 8,453.64 is: 11,667.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.06 : 18,611.81 = 8,453.64 : x
  2. Step 2: Convert to fraction form
    13,485.06/18,611.81 = 8,453.64/x
  3. Step 3: Cross multiply
    13,485.06x = 18,611.81 × 8,453.64
  4. Step 4: Simplify right side
    13,485.06x = 157,337,600.72
  5. Step 5: Solve for x
    x = 157,337,600.72/13,485.06
  6. Step 6: Final answer
    x = 11,667.55

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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.