Home / 13,464.08-18,571.84-8,690.16

Finding the Fourth Proportional to 13,464.08, 18,571.84 and 8,690.16

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Solution

The fourth proportional to 13,464.08, 18,571.84 and 8,690.16 is: 11,986.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,464.08 : 18,571.84 = 8,690.16 : x
  2. Step 2: Convert to fraction form
    13,464.08/18,571.84 = 8,690.16/x
  3. Step 3: Cross multiply
    13,464.08x = 18,571.84 × 8,690.16
  4. Step 4: Simplify right side
    13,464.08x = 161,392,261.09
  5. Step 5: Solve for x
    x = 161,392,261.09/13,464.08
  6. Step 6: Final answer
    x = 11,986.88

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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.