Home / 12,561.99-18,843.39-6,318.60

Finding the Fourth Proportional to 12,561.99, 18,843.39 and 6,318.60

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Solution

The fourth proportional to 12,561.99, 18,843.39 and 6,318.60 is: 9,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.99 : 18,843.39 = 6,318.60 : x
  2. Step 2: Convert to fraction form
    12,561.99/18,843.39 = 6,318.60/x
  3. Step 3: Cross multiply
    12,561.99x = 18,843.39 × 6,318.60
  4. Step 4: Simplify right side
    12,561.99x = 119,063,844.05
  5. Step 5: Solve for x
    x = 119,063,844.05/12,561.99
  6. Step 6: Final answer
    x = 9,478.10

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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.