Home / 12,790.38-19,188.30-7,246.38

Finding the Fourth Proportional to 12,790.38, 19,188.30 and 7,246.38

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Solution

The fourth proportional to 12,790.38, 19,188.30 and 7,246.38 is: 10,871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.38 : 19,188.30 = 7,246.38 : x
  2. Step 2: Convert to fraction form
    12,790.38/19,188.30 = 7,246.38/x
  3. Step 3: Cross multiply
    12,790.38x = 19,188.30 × 7,246.38
  4. Step 4: Simplify right side
    12,790.38x = 139,045,713.35
  5. Step 5: Solve for x
    x = 139,045,713.35/12,790.38
  6. Step 6: Final answer
    x = 10,871.12

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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.