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Finding the Fourth Proportional to 11,235.78, 15,493.41 and 7,693.38

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Solution

The fourth proportional to 11,235.78, 15,493.41 and 7,693.38 is: 10,608.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.78 : 15,493.41 = 7,693.38 : x
  2. Step 2: Convert to fraction form
    11,235.78/15,493.41 = 7,693.38/x
  3. Step 3: Cross multiply
    11,235.78x = 15,493.41 × 7,693.38
  4. Step 4: Simplify right side
    11,235.78x = 119,196,690.63
  5. Step 5: Solve for x
    x = 119,196,690.63/11,235.78
  6. Step 6: Final answer
    x = 10,608.67

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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.