Home / 20,677.11-28,533.56-12,179.58

Finding the Fourth Proportional to 20,677.11, 28,533.56 and 12,179.58

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Solution

The fourth proportional to 20,677.11, 28,533.56 and 12,179.58 is: 16,807.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.11 : 28,533.56 = 12,179.58 : x
  2. Step 2: Convert to fraction form
    20,677.11/28,533.56 = 12,179.58/x
  3. Step 3: Cross multiply
    20,677.11x = 28,533.56 × 12,179.58
  4. Step 4: Simplify right side
    20,677.11x = 347,526,776.70
  5. Step 5: Solve for x
    x = 347,526,776.70/20,677.11
  6. Step 6: Final answer
    x = 16,807.32

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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.