Home / 12,621.94-18,944.60-6,386.37

Finding the Fourth Proportional to 12,621.94, 18,944.60 and 6,386.37

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Solution

The fourth proportional to 12,621.94, 18,944.60 and 6,386.37 is: 9,585.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.94 : 18,944.60 = 6,386.37 : x
  2. Step 2: Convert to fraction form
    12,621.94/18,944.60 = 6,386.37/x
  3. Step 3: Cross multiply
    12,621.94x = 18,944.60 × 6,386.37
  4. Step 4: Simplify right side
    12,621.94x = 120,987,225.10
  5. Step 5: Solve for x
    x = 120,987,225.10/12,621.94
  6. Step 6: Final answer
    x = 9,585.47

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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.