Home / 13,509.94-18,628.55-8,723.60

Finding the Fourth Proportional to 13,509.94, 18,628.55 and 8,723.60

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Solution

The fourth proportional to 13,509.94, 18,628.55 and 8,723.60 is: 12,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.94 : 18,628.55 = 8,723.60 : x
  2. Step 2: Convert to fraction form
    13,509.94/18,628.55 = 8,723.60/x
  3. Step 3: Cross multiply
    13,509.94x = 18,628.55 × 8,723.60
  4. Step 4: Simplify right side
    13,509.94x = 162,507,944.05
  5. Step 5: Solve for x
    x = 162,507,944.05/13,509.94
  6. Step 6: Final answer
    x = 12,028.77

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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.