Home / 20,675.25-28,533.96-12,180.04

Finding the Fourth Proportional to 20,675.25, 28,533.96 and 12,180.04

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Solution

The fourth proportional to 20,675.25, 28,533.96 and 12,180.04 is: 16,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.25 : 28,533.96 = 12,180.04 : x
  2. Step 2: Convert to fraction form
    20,675.25/28,533.96 = 12,180.04/x
  3. Step 3: Cross multiply
    20,675.25x = 28,533.96 × 12,180.04
  4. Step 4: Simplify right side
    20,675.25x = 347,544,774.16
  5. Step 5: Solve for x
    x = 347,544,774.16/20,675.25
  6. Step 6: Final answer
    x = 16,809.70

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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.