Home / 20,672.19-28,534.07-12,173.64

Finding the Fourth Proportional to 20,672.19, 28,534.07 and 12,173.64

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Solution

The fourth proportional to 20,672.19, 28,534.07 and 12,173.64 is: 16,803.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.19 : 28,534.07 = 12,173.64 : x
  2. Step 2: Convert to fraction form
    20,672.19/28,534.07 = 12,173.64/x
  3. Step 3: Cross multiply
    20,672.19x = 28,534.07 × 12,173.64
  4. Step 4: Simplify right side
    20,672.19x = 347,363,435.05
  5. Step 5: Solve for x
    x = 347,363,435.05/20,672.19
  6. Step 6: Final answer
    x = 16,803.42

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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.