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Finding the Fourth Proportional to 12,895.08, 19,342.80 and 3,661.08

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Solution

The fourth proportional to 12,895.08, 19,342.80 and 3,661.08 is: 5,491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.08 : 19,342.80 = 3,661.08 : x
  2. Step 2: Convert to fraction form
    12,895.08/19,342.80 = 3,661.08/x
  3. Step 3: Cross multiply
    12,895.08x = 19,342.80 × 3,661.08
  4. Step 4: Simplify right side
    12,895.08x = 70,815,538.22
  5. Step 5: Solve for x
    x = 70,815,538.22/12,895.08
  6. Step 6: Final answer
    x = 5,491.67

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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.