Home / 20,976.98-28,946.16-12,022.43

Finding the Fourth Proportional to 20,976.98, 28,946.16 and 12,022.43

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Solution

The fourth proportional to 20,976.98, 28,946.16 and 12,022.43 is: 16,589.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.98 : 28,946.16 = 12,022.43 : x
  2. Step 2: Convert to fraction form
    20,976.98/28,946.16 = 12,022.43/x
  3. Step 3: Cross multiply
    20,976.98x = 28,946.16 × 12,022.43
  4. Step 4: Simplify right side
    20,976.98x = 348,003,037.64
  5. Step 5: Solve for x
    x = 348,003,037.64/20,976.98
  6. Step 6: Final answer
    x = 16,589.76

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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.