Home / 20,966.32-28,933.41-12,013.96

Finding the Fourth Proportional to 20,966.32, 28,933.41 and 12,013.96

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Solution

The fourth proportional to 20,966.32, 28,933.41 and 12,013.96 is: 16,579.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.32 : 28,933.41 = 12,013.96 : x
  2. Step 2: Convert to fraction form
    20,966.32/28,933.41 = 12,013.96/x
  3. Step 3: Cross multiply
    20,966.32x = 28,933.41 × 12,013.96
  4. Step 4: Simplify right side
    20,966.32x = 347,604,830.40
  5. Step 5: Solve for x
    x = 347,604,830.40/20,966.32
  6. Step 6: Final answer
    x = 16,579.20

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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.