Home / 20,966.94-28,938.87-12,015.90

Finding the Fourth Proportional to 20,966.94, 28,938.87 and 12,015.90

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Solution

The fourth proportional to 20,966.94, 28,938.87 and 12,015.90 is: 16,584.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.94 : 28,938.87 = 12,015.90 : x
  2. Step 2: Convert to fraction form
    20,966.94/28,938.87 = 12,015.90/x
  3. Step 3: Cross multiply
    20,966.94x = 28,938.87 × 12,015.90
  4. Step 4: Simplify right side
    20,966.94x = 347,726,568.03
  5. Step 5: Solve for x
    x = 347,726,568.03/20,966.94
  6. Step 6: Final answer
    x = 16,584.52

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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.