Home / 20,394.08-28,142.88-12,008.96

Finding the Fourth Proportional to 20,394.08, 28,142.88 and 12,008.96

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Solution

The fourth proportional to 20,394.08, 28,142.88 and 12,008.96 is: 16,571.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,394.08 : 28,142.88 = 12,008.96 : x
  2. Step 2: Convert to fraction form
    20,394.08/28,142.88 = 12,008.96/x
  3. Step 3: Cross multiply
    20,394.08x = 28,142.88 × 12,008.96
  4. Step 4: Simplify right side
    20,394.08x = 337,966,720.20
  5. Step 5: Solve for x
    x = 337,966,720.20/20,394.08
  6. Step 6: Final answer
    x = 16,571.81

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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.