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Finding the Fourth Proportional to 12,873.88, 19,280.85 and 12,519.19

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Solution

The fourth proportional to 12,873.88, 19,280.85 and 12,519.19 is: 18,749.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,873.88 : 19,280.85 = 12,519.19 : x
  2. Step 2: Convert to fraction form
    12,873.88/19,280.85 = 12,519.19/x
  3. Step 3: Cross multiply
    12,873.88x = 19,280.85 × 12,519.19
  4. Step 4: Simplify right side
    12,873.88x = 241,380,624.51
  5. Step 5: Solve for x
    x = 241,380,624.51/12,873.88
  6. Step 6: Final answer
    x = 18,749.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.