Home / 20,966.31-28,933.73-12,013.62

Finding the Fourth Proportional to 20,966.31, 28,933.73 and 12,013.62

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Solution

The fourth proportional to 20,966.31, 28,933.73 and 12,013.62 is: 16,578.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.31 : 28,933.73 = 12,013.62 : x
  2. Step 2: Convert to fraction form
    20,966.31/28,933.73 = 12,013.62/x
  3. Step 3: Cross multiply
    20,966.31x = 28,933.73 × 12,013.62
  4. Step 4: Simplify right side
    20,966.31x = 347,598,777.33
  5. Step 5: Solve for x
    x = 347,598,777.33/20,966.31
  6. Step 6: Final answer
    x = 16,578.92

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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.