Home / 20,675.18-28,533.87-12,179.98

Finding the Fourth Proportional to 20,675.18, 28,533.87 and 12,179.98

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Solution

The fourth proportional to 20,675.18, 28,533.87 and 12,179.98 is: 16,809.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.18 : 28,533.87 = 12,179.98 : x
  2. Step 2: Convert to fraction form
    20,675.18/28,533.87 = 12,179.98/x
  3. Step 3: Cross multiply
    20,675.18x = 28,533.87 × 12,179.98
  4. Step 4: Simplify right side
    20,675.18x = 347,541,965.92
  5. Step 5: Solve for x
    x = 347,541,965.92/20,675.18
  6. Step 6: Final answer
    x = 16,809.62

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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.