Home / 12,340.19-17,028.55-7,622.75

Finding the Fourth Proportional to 12,340.19, 17,028.55 and 7,622.75

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Solution

The fourth proportional to 12,340.19, 17,028.55 and 7,622.75 is: 10,518.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.19 : 17,028.55 = 7,622.75 : x
  2. Step 2: Convert to fraction form
    12,340.19/17,028.55 = 7,622.75/x
  3. Step 3: Cross multiply
    12,340.19x = 17,028.55 × 7,622.75
  4. Step 4: Simplify right side
    12,340.19x = 129,804,379.51
  5. Step 5: Solve for x
    x = 129,804,379.51/12,340.19
  6. Step 6: Final answer
    x = 10,518.83

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Half scale
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Double scale
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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.