Home / 12,657.56-18,986.94-5,636.36

Finding the Fourth Proportional to 12,657.56, 18,986.94 and 5,636.36

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Solution

The fourth proportional to 12,657.56, 18,986.94 and 5,636.36 is: 8,454.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.56 : 18,986.94 = 5,636.36 : x
  2. Step 2: Convert to fraction form
    12,657.56/18,986.94 = 5,636.36/x
  3. Step 3: Cross multiply
    12,657.56x = 18,986.94 × 5,636.36
  4. Step 4: Simplify right side
    12,657.56x = 107,017,229.14
  5. Step 5: Solve for x
    x = 107,017,229.14/12,657.56
  6. Step 6: Final answer
    x = 8,454.81

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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.