Home / 12,356.10-18,529.80-3,589.20

Finding the Fourth Proportional to 12,356.10, 18,529.80 and 3,589.20

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Solution

The fourth proportional to 12,356.10, 18,529.80 and 3,589.20 is: 5,382.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.10 : 18,529.80 = 3,589.20 : x
  2. Step 2: Convert to fraction form
    12,356.10/18,529.80 = 3,589.20/x
  3. Step 3: Cross multiply
    12,356.10x = 18,529.80 × 3,589.20
  4. Step 4: Simplify right side
    12,356.10x = 66,507,158.16
  5. Step 5: Solve for x
    x = 66,507,158.16/12,356.10
  6. Step 6: Final answer
    x = 5,382.54

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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.