Home / 12,739.82-17,580.35-7,074.92

Finding the Fourth Proportional to 12,739.82, 17,580.35 and 7,074.92

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Solution

The fourth proportional to 12,739.82, 17,580.35 and 7,074.92 is: 9,763.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.82 : 17,580.35 = 7,074.92 : x
  2. Step 2: Convert to fraction form
    12,739.82/17,580.35 = 7,074.92/x
  3. Step 3: Cross multiply
    12,739.82x = 17,580.35 × 7,074.92
  4. Step 4: Simplify right side
    12,739.82x = 124,379,631.46
  5. Step 5: Solve for x
    x = 124,379,631.46/12,739.82
  6. Step 6: Final answer
    x = 9,763.06

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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.