Home / 14,004.45-20,979-8,441.37

Finding the Fourth Proportional to 14,004.45, 20,979 and 8,441.37

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Solution

The fourth proportional to 14,004.45, 20,979 and 8,441.37 is: 12,645.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,004.45 : 20,979 = 8,441.37 : x
  2. Step 2: Convert to fraction form
    14,004.45/20,979 = 8,441.37/x
  3. Step 3: Cross multiply
    14,004.45x = 20,979 × 8,441.37
  4. Step 4: Simplify right side
    14,004.45x = 177,091,501.23
  5. Step 5: Solve for x
    x = 177,091,501.23/14,004.45
  6. Step 6: Final answer
    x = 12,645.37

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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.