Home / 20,960.96-28,928.04-12,011.36

Finding the Fourth Proportional to 20,960.96, 28,928.04 and 12,011.36

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Solution

The fourth proportional to 20,960.96, 28,928.04 and 12,011.36 is: 16,576.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.96 : 28,928.04 = 12,011.36 : x
  2. Step 2: Convert to fraction form
    20,960.96/28,928.04 = 12,011.36/x
  3. Step 3: Cross multiply
    20,960.96x = 28,928.04 × 12,011.36
  4. Step 4: Simplify right side
    20,960.96x = 347,465,102.53
  5. Step 5: Solve for x
    x = 347,465,102.53/20,960.96
  6. Step 6: Final answer
    x = 16,576.77

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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.