Home / 11,890.57-17,838.60-3,570.75

Finding the Fourth Proportional to 11,890.57, 17,838.60 and 3,570.75

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Solution

The fourth proportional to 11,890.57, 17,838.60 and 3,570.75 is: 5,356.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.57 : 17,838.60 = 3,570.75 : x
  2. Step 2: Convert to fraction form
    11,890.57/17,838.60 = 3,570.75/x
  3. Step 3: Cross multiply
    11,890.57x = 17,838.60 × 3,570.75
  4. Step 4: Simplify right side
    11,890.57x = 63,697,129.93
  5. Step 5: Solve for x
    x = 63,697,129.93/11,890.57
  6. Step 6: Final answer
    x = 5,356.94

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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.