Home / 20,966.55-28,933.38-12,019.34

Finding the Fourth Proportional to 20,966.55, 28,933.38 and 12,019.34

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Solution

The fourth proportional to 20,966.55, 28,933.38 and 12,019.34 is: 16,586.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.55 : 28,933.38 = 12,019.34 : x
  2. Step 2: Convert to fraction form
    20,966.55/28,933.38 = 12,019.34/x
  3. Step 3: Cross multiply
    20,966.55x = 28,933.38 × 12,019.34
  4. Step 4: Simplify right side
    20,966.55x = 347,759,986.90
  5. Step 5: Solve for x
    x = 347,759,986.90/20,966.55
  6. Step 6: Final answer
    x = 16,586.42

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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.