Home / 20,674.68-28,533.18-12,179.49

Finding the Fourth Proportional to 20,674.68, 28,533.18 and 12,179.49

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Solution

The fourth proportional to 20,674.68, 28,533.18 and 12,179.49 is: 16,808.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.68 : 28,533.18 = 12,179.49 : x
  2. Step 2: Convert to fraction form
    20,674.68/28,533.18 = 12,179.49/x
  3. Step 3: Cross multiply
    20,674.68x = 28,533.18 × 12,179.49
  4. Step 4: Simplify right side
    20,674.68x = 347,519,580.48
  5. Step 5: Solve for x
    x = 347,519,580.48/20,674.68
  6. Step 6: Final answer
    x = 16,808.95

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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.