Home / 11,815.19-16,307.31-6,782.79

Finding the Fourth Proportional to 11,815.19, 16,307.31 and 6,782.79

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Solution

The fourth proportional to 11,815.19, 16,307.31 and 6,782.79 is: 9,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.19 : 16,307.31 = 6,782.79 : x
  2. Step 2: Convert to fraction form
    11,815.19/16,307.31 = 6,782.79/x
  3. Step 3: Cross multiply
    11,815.19x = 16,307.31 × 6,782.79
  4. Step 4: Simplify right side
    11,815.19x = 110,609,059.19
  5. Step 5: Solve for x
    x = 110,609,059.19/11,815.19
  6. Step 6: Final answer
    x = 9,361.60

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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.