Home / 20,912.58-28,863.81-12,533.94

Finding the Fourth Proportional to 20,912.58, 28,863.81 and 12,533.94

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Solution

The fourth proportional to 20,912.58, 28,863.81 and 12,533.94 is: 17,299.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912.58 : 28,863.81 = 12,533.94 : x
  2. Step 2: Convert to fraction form
    20,912.58/28,863.81 = 12,533.94/x
  3. Step 3: Cross multiply
    20,912.58x = 28,863.81 × 12,533.94
  4. Step 4: Simplify right side
    20,912.58x = 361,777,262.71
  5. Step 5: Solve for x
    x = 361,777,262.71/20,912.58
  6. Step 6: Final answer
    x = 17,299.50

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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.