Home / 31,913.92-47,878.98-12,190.42

Finding the Fourth Proportional to 31,913.92, 47,878.98 and 12,190.42

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Solution

The fourth proportional to 31,913.92, 47,878.98 and 12,190.42 is: 18,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,913.92 : 47,878.98 = 12,190.42 : x
  2. Step 2: Convert to fraction form
    31,913.92/47,878.98 = 12,190.42/x
  3. Step 3: Cross multiply
    31,913.92x = 47,878.98 × 12,190.42
  4. Step 4: Simplify right side
    31,913.92x = 583,664,875.37
  5. Step 5: Solve for x
    x = 583,664,875.37/31,913.92
  6. Step 6: Final answer
    x = 18,288.72

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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.