Home / 11,454.78-15,808.48-6,419.47

Finding the Fourth Proportional to 11,454.78, 15,808.48 and 6,419.47

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Solution

The fourth proportional to 11,454.78, 15,808.48 and 6,419.47 is: 8,859.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,454.78 : 15,808.48 = 6,419.47 : x
  2. Step 2: Convert to fraction form
    11,454.78/15,808.48 = 6,419.47/x
  3. Step 3: Cross multiply
    11,454.78x = 15,808.48 × 6,419.47
  4. Step 4: Simplify right side
    11,454.78x = 101,481,968.01
  5. Step 5: Solve for x
    x = 101,481,968.01/11,454.78
  6. Step 6: Final answer
    x = 8,859.36

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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.