Home / 21,706.63-29,946.59-13,635.54

Finding the Fourth Proportional to 21,706.63, 29,946.59 and 13,635.54

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Solution

The fourth proportional to 21,706.63, 29,946.59 and 13,635.54 is: 18,811.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,706.63 : 29,946.59 = 13,635.54 : x
  2. Step 2: Convert to fraction form
    21,706.63/29,946.59 = 13,635.54/x
  3. Step 3: Cross multiply
    21,706.63x = 29,946.59 × 13,635.54
  4. Step 4: Simplify right side
    21,706.63x = 408,337,932.50
  5. Step 5: Solve for x
    x = 408,337,932.50/21,706.63
  6. Step 6: Final answer
    x = 18,811.67

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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.