Home / 12,441.12-18,629.88-6,888.30

Finding the Fourth Proportional to 12,441.12, 18,629.88 and 6,888.30

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Solution

The fourth proportional to 12,441.12, 18,629.88 and 6,888.30 is: 10,314.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,441.12 : 18,629.88 = 6,888.30 : x
  2. Step 2: Convert to fraction form
    12,441.12/18,629.88 = 6,888.30/x
  3. Step 3: Cross multiply
    12,441.12x = 18,629.88 × 6,888.30
  4. Step 4: Simplify right side
    12,441.12x = 128,328,202.40
  5. Step 5: Solve for x
    x = 128,328,202.40/12,441.12
  6. Step 6: Final answer
    x = 10,314.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.