Home / 12,813.75-19,216.01-5,418.78

Finding the Fourth Proportional to 12,813.75, 19,216.01 and 5,418.78

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Solution

The fourth proportional to 12,813.75, 19,216.01 and 5,418.78 is: 8,126.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.75 : 19,216.01 = 5,418.78 : x
  2. Step 2: Convert to fraction form
    12,813.75/19,216.01 = 5,418.78/x
  3. Step 3: Cross multiply
    12,813.75x = 19,216.01 × 5,418.78
  4. Step 4: Simplify right side
    12,813.75x = 104,127,303.57
  5. Step 5: Solve for x
    x = 104,127,303.57/12,813.75
  6. Step 6: Final answer
    x = 8,126.22

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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.