Home / 20,969.30-28,937.62-12,016.37

Finding the Fourth Proportional to 20,969.30, 28,937.62 and 12,016.37

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Solution

The fourth proportional to 20,969.30, 28,937.62 and 12,016.37 is: 16,582.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.30 : 28,937.62 = 12,016.37 : x
  2. Step 2: Convert to fraction form
    20,969.30/28,937.62 = 12,016.37/x
  3. Step 3: Cross multiply
    20,969.30x = 28,937.62 × 12,016.37
  4. Step 4: Simplify right side
    20,969.30x = 347,725,236.20
  5. Step 5: Solve for x
    x = 347,725,236.20/20,969.30
  6. Step 6: Final answer
    x = 16,582.58

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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.