Home / 12,805.25-19,215.44-5,409.23

Finding the Fourth Proportional to 12,805.25, 19,215.44 and 5,409.23

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Solution

The fourth proportional to 12,805.25, 19,215.44 and 5,409.23 is: 8,117.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.25 : 19,215.44 = 5,409.23 : x
  2. Step 2: Convert to fraction form
    12,805.25/19,215.44 = 5,409.23/x
  3. Step 3: Cross multiply
    12,805.25x = 19,215.44 × 5,409.23
  4. Step 4: Simplify right side
    12,805.25x = 103,940,707.47
  5. Step 5: Solve for x
    x = 103,940,707.47/12,805.25
  6. Step 6: Final answer
    x = 8,117.04

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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.