Home / 14,099.78-19,456.93-7,811.75

Finding the Fourth Proportional to 14,099.78, 19,456.93 and 7,811.75

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Solution

The fourth proportional to 14,099.78, 19,456.93 and 7,811.75 is: 10,779.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,099.78 : 19,456.93 = 7,811.75 : x
  2. Step 2: Convert to fraction form
    14,099.78/19,456.93 = 7,811.75/x
  3. Step 3: Cross multiply
    14,099.78x = 19,456.93 × 7,811.75
  4. Step 4: Simplify right side
    14,099.78x = 151,992,672.93
  5. Step 5: Solve for x
    x = 151,992,672.93/14,099.78
  6. Step 6: Final answer
    x = 10,779.79

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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.