Home / 12,647.85-18,970.62-5,628.18

Finding the Fourth Proportional to 12,647.85, 18,970.62 and 5,628.18

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Solution

The fourth proportional to 12,647.85, 18,970.62 and 5,628.18 is: 8,441.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.85 : 18,970.62 = 5,628.18 : x
  2. Step 2: Convert to fraction form
    12,647.85/18,970.62 = 5,628.18/x
  3. Step 3: Cross multiply
    12,647.85x = 18,970.62 × 5,628.18
  4. Step 4: Simplify right side
    12,647.85x = 106,770,064.07
  5. Step 5: Solve for x
    x = 106,770,064.07/12,647.85
  6. Step 6: Final answer
    x = 8,441.76

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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.