Home / 12,851.88-19,278.96-5,455.32

Finding the Fourth Proportional to 12,851.88, 19,278.96 and 5,455.32

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Solution

The fourth proportional to 12,851.88, 19,278.96 and 5,455.32 is: 8,183.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,851.88 : 19,278.96 = 5,455.32 : x
  2. Step 2: Convert to fraction form
    12,851.88/19,278.96 = 5,455.32/x
  3. Step 3: Cross multiply
    12,851.88x = 19,278.96 × 5,455.32
  4. Step 4: Simplify right side
    12,851.88x = 105,172,896.07
  5. Step 5: Solve for x
    x = 105,172,896.07/12,851.88
  6. Step 6: Final answer
    x = 8,183.46

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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.