Home / 11,211.90-16,793.55-9,980.70

Finding the Fourth Proportional to 11,211.90, 16,793.55 and 9,980.70

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Solution

The fourth proportional to 11,211.90, 16,793.55 and 9,980.70 is: 14,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.90 : 16,793.55 = 9,980.70 : x
  2. Step 2: Convert to fraction form
    11,211.90/16,793.55 = 9,980.70/x
  3. Step 3: Cross multiply
    11,211.90x = 16,793.55 × 9,980.70
  4. Step 4: Simplify right side
    11,211.90x = 167,611,384.49
  5. Step 5: Solve for x
    x = 167,611,384.49/11,211.90
  6. Step 6: Final answer
    x = 14,949.42

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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.