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Finding the Fourth Proportional to 11,357.98, 17,040.45 and 5,815.21

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Solution

The fourth proportional to 11,357.98, 17,040.45 and 5,815.21 is: 8,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,357.98 : 17,040.45 = 5,815.21 : x
  2. Step 2: Convert to fraction form
    11,357.98/17,040.45 = 5,815.21/x
  3. Step 3: Cross multiply
    11,357.98x = 17,040.45 × 5,815.21
  4. Step 4: Simplify right side
    11,357.98x = 99,093,795.24
  5. Step 5: Solve for x
    x = 99,093,795.24/11,357.98
  6. Step 6: Final answer
    x = 8,724.60

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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.