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Finding the Fourth Proportional to 12,958.76, 19,434 and 5,561.24

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Solution

The fourth proportional to 12,958.76, 19,434 and 5,561.24 is: 8,340.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,958.76 : 19,434 = 5,561.24 : x
  2. Step 2: Convert to fraction form
    12,958.76/19,434 = 5,561.24/x
  3. Step 3: Cross multiply
    12,958.76x = 19,434 × 5,561.24
  4. Step 4: Simplify right side
    12,958.76x = 108,077,138.16
  5. Step 5: Solve for x
    x = 108,077,138.16/12,958.76
  6. Step 6: Final answer
    x = 8,340.08

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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.