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Finding the Fourth Proportional to 31,914, 47,871 and 14,363.32

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Solution

The fourth proportional to 31,914, 47,871 and 14,363.32 is: 21,544.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,914 : 47,871 = 14,363.32 : x
  2. Step 2: Convert to fraction form
    31,914/47,871 = 14,363.32/x
  3. Step 3: Cross multiply
    31,914x = 47,871 × 14,363.32
  4. Step 4: Simplify right side
    31,914x = 687,586,491.72
  5. Step 5: Solve for x
    x = 687,586,491.72/31,914
  6. Step 6: Final answer
    x = 21,544.98

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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.