Home / 12,628.35-18,942.51-5,230.81

Finding the Fourth Proportional to 12,628.35, 18,942.51 and 5,230.81

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Solution

The fourth proportional to 12,628.35, 18,942.51 and 5,230.81 is: 7,846.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.35 : 18,942.51 = 5,230.81 : x
  2. Step 2: Convert to fraction form
    12,628.35/18,942.51 = 5,230.81/x
  3. Step 3: Cross multiply
    12,628.35x = 18,942.51 × 5,230.81
  4. Step 4: Simplify right side
    12,628.35x = 99,084,670.73
  5. Step 5: Solve for x
    x = 99,084,670.73/12,628.35
  6. Step 6: Final answer
    x = 7,846.21

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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.