Home / 20,976.59-28,946.82-12,017.87

Finding the Fourth Proportional to 20,976.59, 28,946.82 and 12,017.87

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Solution

The fourth proportional to 20,976.59, 28,946.82 and 12,017.87 is: 16,584.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.59 : 28,946.82 = 12,017.87 : x
  2. Step 2: Convert to fraction form
    20,976.59/28,946.82 = 12,017.87/x
  3. Step 3: Cross multiply
    20,976.59x = 28,946.82 × 12,017.87
  4. Step 4: Simplify right side
    20,976.59x = 347,879,119.67
  5. Step 5: Solve for x
    x = 347,879,119.67/20,976.59
  6. Step 6: Final answer
    x = 16,584.16

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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.