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Finding the Fourth Proportional to 20,468.56, 28,250.01 and 12,919.01

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Solution

The fourth proportional to 20,468.56, 28,250.01 and 12,919.01 is: 17,830.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.56 : 28,250.01 = 12,919.01 : x
  2. Step 2: Convert to fraction form
    20,468.56/28,250.01 = 12,919.01/x
  3. Step 3: Cross multiply
    20,468.56x = 28,250.01 × 12,919.01
  4. Step 4: Simplify right side
    20,468.56x = 364,962,161.69
  5. Step 5: Solve for x
    x = 364,962,161.69/20,468.56
  6. Step 6: Final answer
    x = 17,830.38

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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.