Home / 20,794.35-31,211.10-10,940.70

Finding the Fourth Proportional to 20,794.35, 31,211.10 and 10,940.70

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Solution

The fourth proportional to 20,794.35, 31,211.10 and 10,940.70 is: 16,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.35 : 31,211.10 = 10,940.70 : x
  2. Step 2: Convert to fraction form
    20,794.35/31,211.10 = 10,940.70/x
  3. Step 3: Cross multiply
    20,794.35x = 31,211.10 × 10,940.70
  4. Step 4: Simplify right side
    20,794.35x = 341,471,281.77
  5. Step 5: Solve for x
    x = 341,471,281.77/20,794.35
  6. Step 6: Final answer
    x = 16,421.35

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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.