Home / 20,655.44-28,513.32-12,274.64

Finding the Fourth Proportional to 20,655.44, 28,513.32 and 12,274.64

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Solution

The fourth proportional to 20,655.44, 28,513.32 and 12,274.64 is: 16,944.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.44 : 28,513.32 = 12,274.64 : x
  2. Step 2: Convert to fraction form
    20,655.44/28,513.32 = 12,274.64/x
  3. Step 3: Cross multiply
    20,655.44x = 28,513.32 × 12,274.64
  4. Step 4: Simplify right side
    20,655.44x = 349,990,738.20
  5. Step 5: Solve for x
    x = 349,990,738.20/20,655.44
  6. Step 6: Final answer
    x = 16,944.24

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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.