Home / 11,454.89-15,806.41-6,419.39

Finding the Fourth Proportional to 11,454.89, 15,806.41 and 6,419.39

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Solution

The fourth proportional to 11,454.89, 15,806.41 and 6,419.39 is: 8,858.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,454.89 : 15,806.41 = 6,419.39 : x
  2. Step 2: Convert to fraction form
    11,454.89/15,806.41 = 6,419.39/x
  3. Step 3: Cross multiply
    11,454.89x = 15,806.41 × 6,419.39
  4. Step 4: Simplify right side
    11,454.89x = 101,467,415.21
  5. Step 5: Solve for x
    x = 101,467,415.21/11,454.89
  6. Step 6: Final answer
    x = 8,858.00

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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.