Home / 13,706.12-18,914.93-7,738.85

Finding the Fourth Proportional to 13,706.12, 18,914.93 and 7,738.85

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Solution

The fourth proportional to 13,706.12, 18,914.93 and 7,738.85 is: 10,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706.12 : 18,914.93 = 7,738.85 : x
  2. Step 2: Convert to fraction form
    13,706.12/18,914.93 = 7,738.85/x
  3. Step 3: Cross multiply
    13,706.12x = 18,914.93 × 7,738.85
  4. Step 4: Simplify right side
    13,706.12x = 146,379,711.46
  5. Step 5: Solve for x
    x = 146,379,711.46/13,706.12
  6. Step 6: Final answer
    x = 10,679.88

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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.