Home / 12,120.91-16,724.88-6,814.67

Finding the Fourth Proportional to 12,120.91, 16,724.88 and 6,814.67

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Solution

The fourth proportional to 12,120.91, 16,724.88 and 6,814.67 is: 9,403.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.91 : 16,724.88 = 6,814.67 : x
  2. Step 2: Convert to fraction form
    12,120.91/16,724.88 = 6,814.67/x
  3. Step 3: Cross multiply
    12,120.91x = 16,724.88 × 6,814.67
  4. Step 4: Simplify right side
    12,120.91x = 113,974,454.37
  5. Step 5: Solve for x
    x = 113,974,454.37/12,120.91
  6. Step 6: Final answer
    x = 9,403.13

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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.