Home / 20,286.70-30,440.99-9,898.45

Finding the Fourth Proportional to 20,286.70, 30,440.99 and 9,898.45

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Solution

The fourth proportional to 20,286.70, 30,440.99 and 9,898.45 is: 14,853.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.70 : 30,440.99 = 9,898.45 : x
  2. Step 2: Convert to fraction form
    20,286.70/30,440.99 = 9,898.45/x
  3. Step 3: Cross multiply
    20,286.70x = 30,440.99 × 9,898.45
  4. Step 4: Simplify right side
    20,286.70x = 301,318,709.50
  5. Step 5: Solve for x
    x = 301,318,709.50/20,286.70
  6. Step 6: Final answer
    x = 14,853.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.