Home / 12,739.95-17,577.68-7,150.83

Finding the Fourth Proportional to 12,739.95, 17,577.68 and 7,150.83

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Solution

The fourth proportional to 12,739.95, 17,577.68 and 7,150.83 is: 9,866.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.95 : 17,577.68 = 7,150.83 : x
  2. Step 2: Convert to fraction form
    12,739.95/17,577.68 = 7,150.83/x
  3. Step 3: Cross multiply
    12,739.95x = 17,577.68 × 7,150.83
  4. Step 4: Simplify right side
    12,739.95x = 125,694,965.72
  5. Step 5: Solve for x
    x = 125,694,965.72/12,739.95
  6. Step 6: Final answer
    x = 9,866.21

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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.