Home / 12,338.19-17,025.80-7,620.75

Finding the Fourth Proportional to 12,338.19, 17,025.80 and 7,620.75

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Solution

The fourth proportional to 12,338.19, 17,025.80 and 7,620.75 is: 10,516.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.19 : 17,025.80 = 7,620.75 : x
  2. Step 2: Convert to fraction form
    12,338.19/17,025.80 = 7,620.75/x
  3. Step 3: Cross multiply
    12,338.19x = 17,025.80 × 7,620.75
  4. Step 4: Simplify right side
    12,338.19x = 129,749,327.25
  5. Step 5: Solve for x
    x = 129,749,327.25/12,338.19
  6. Step 6: Final answer
    x = 10,516.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.