Home / 13,485.24-18,611.88-9,958.64

Finding the Fourth Proportional to 13,485.24, 18,611.88 and 9,958.64

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Solution

The fourth proportional to 13,485.24, 18,611.88 and 9,958.64 is: 13,744.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.24 : 18,611.88 = 9,958.64 : x
  2. Step 2: Convert to fraction form
    13,485.24/18,611.88 = 9,958.64/x
  3. Step 3: Cross multiply
    13,485.24x = 18,611.88 × 9,958.64
  4. Step 4: Simplify right side
    13,485.24x = 185,349,012.64
  5. Step 5: Solve for x
    x = 185,349,012.64/13,485.24
  6. Step 6: Final answer
    x = 13,744.58

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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.