Home / 20,679.25-28,539.48-12,184.04

Finding the Fourth Proportional to 20,679.25, 28,539.48 and 12,184.04

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Solution

The fourth proportional to 20,679.25, 28,539.48 and 12,184.04 is: 16,815.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.25 : 28,539.48 = 12,184.04 : x
  2. Step 2: Convert to fraction form
    20,679.25/28,539.48 = 12,184.04/x
  3. Step 3: Cross multiply
    20,679.25x = 28,539.48 × 12,184.04
  4. Step 4: Simplify right side
    20,679.25x = 347,726,165.90
  5. Step 5: Solve for x
    x = 347,726,165.90/20,679.25
  6. Step 6: Final answer
    x = 16,815.22

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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.