Home / 20,343.85-28,070.42-11,847.35

Finding the Fourth Proportional to 20,343.85, 28,070.42 and 11,847.35

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Solution

The fourth proportional to 20,343.85, 28,070.42 and 11,847.35 is: 16,346.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.85 : 28,070.42 = 11,847.35 : x
  2. Step 2: Convert to fraction form
    20,343.85/28,070.42 = 11,847.35/x
  3. Step 3: Cross multiply
    20,343.85x = 28,070.42 × 11,847.35
  4. Step 4: Simplify right side
    20,343.85x = 332,560,101.33
  5. Step 5: Solve for x
    x = 332,560,101.33/20,343.85
  6. Step 6: Final answer
    x = 16,346.96

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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.