Home / 12,945.21-19,417.82-5,544.87

Finding the Fourth Proportional to 12,945.21, 19,417.82 and 5,544.87

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Solution

The fourth proportional to 12,945.21, 19,417.82 and 5,544.87 is: 8,317.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.21 : 19,417.82 = 5,544.87 : x
  2. Step 2: Convert to fraction form
    12,945.21/19,417.82 = 5,544.87/x
  3. Step 3: Cross multiply
    12,945.21x = 19,417.82 × 5,544.87
  4. Step 4: Simplify right side
    12,945.21x = 107,669,259.86
  5. Step 5: Solve for x
    x = 107,669,259.86/12,945.21
  6. Step 6: Final answer
    x = 8,317.31

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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.