Home / 20,698.40-28,563.46-12,199.18

Finding the Fourth Proportional to 20,698.40, 28,563.46 and 12,199.18

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Solution

The fourth proportional to 20,698.40, 28,563.46 and 12,199.18 is: 16,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.40 : 28,563.46 = 12,199.18 : x
  2. Step 2: Convert to fraction form
    20,698.40/28,563.46 = 12,199.18/x
  3. Step 3: Cross multiply
    20,698.40x = 28,563.46 × 12,199.18
  4. Step 4: Simplify right side
    20,698.40x = 348,450,789.96
  5. Step 5: Solve for x
    x = 348,450,789.96/20,698.40
  6. Step 6: Final answer
    x = 16,834.67

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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.