Home / 12,210.75-18,317.46-3,888.81

Finding the Fourth Proportional to 12,210.75, 18,317.46 and 3,888.81

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Solution

The fourth proportional to 12,210.75, 18,317.46 and 3,888.81 is: 5,833.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.75 : 18,317.46 = 3,888.81 : x
  2. Step 2: Convert to fraction form
    12,210.75/18,317.46 = 3,888.81/x
  3. Step 3: Cross multiply
    12,210.75x = 18,317.46 × 3,888.81
  4. Step 4: Simplify right side
    12,210.75x = 71,233,170.55
  5. Step 5: Solve for x
    x = 71,233,170.55/12,210.75
  6. Step 6: Final answer
    x = 5,833.64

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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.