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Finding the Fourth Proportional to 12,635.58, 18,945.92 and 7,574.76

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Solution

The fourth proportional to 12,635.58, 18,945.92 and 7,574.76 is: 11,357.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.58 : 18,945.92 = 7,574.76 : x
  2. Step 2: Convert to fraction form
    12,635.58/18,945.92 = 7,574.76/x
  3. Step 3: Cross multiply
    12,635.58x = 18,945.92 × 7,574.76
  4. Step 4: Simplify right side
    12,635.58x = 143,510,796.98
  5. Step 5: Solve for x
    x = 143,510,796.98/12,635.58
  6. Step 6: Final answer
    x = 11,357.67

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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.