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Finding the Fourth Proportional to 26,953.72, 40,412.99 and 12,913.31

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Solution

The fourth proportional to 26,953.72, 40,412.99 and 12,913.31 is: 19,361.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,953.72 : 40,412.99 = 12,913.31 : x
  2. Step 2: Convert to fraction form
    26,953.72/40,412.99 = 12,913.31/x
  3. Step 3: Cross multiply
    26,953.72x = 40,412.99 × 12,913.31
  4. Step 4: Simplify right side
    26,953.72x = 521,865,601.21
  5. Step 5: Solve for x
    x = 521,865,601.21/26,953.72
  6. Step 6: Final answer
    x = 19,361.54

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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.