Home / 12,126.88-16,734.20-6,820.67

Finding the Fourth Proportional to 12,126.88, 16,734.20 and 6,820.67

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Solution

The fourth proportional to 12,126.88, 16,734.20 and 6,820.67 is: 9,412.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.88 : 16,734.20 = 6,820.67 : x
  2. Step 2: Convert to fraction form
    12,126.88/16,734.20 = 6,820.67/x
  3. Step 3: Cross multiply
    12,126.88x = 16,734.20 × 6,820.67
  4. Step 4: Simplify right side
    12,126.88x = 114,138,463.65
  5. Step 5: Solve for x
    x = 114,138,463.65/12,126.88
  6. Step 6: Final answer
    x = 9,412.02

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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.