Home / 12,849.44-19,228.80-7,920.32

Finding the Fourth Proportional to 12,849.44, 19,228.80 and 7,920.32

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Solution

The fourth proportional to 12,849.44, 19,228.80 and 7,920.32 is: 11,852.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,849.44 : 19,228.80 = 7,920.32 : x
  2. Step 2: Convert to fraction form
    12,849.44/19,228.80 = 7,920.32/x
  3. Step 3: Cross multiply
    12,849.44x = 19,228.80 × 7,920.32
  4. Step 4: Simplify right side
    12,849.44x = 152,298,249.22
  5. Step 5: Solve for x
    x = 152,298,249.22/12,849.44
  6. Step 6: Final answer
    x = 11,852.52

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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.