Home / 31,408.70-47,121.85-12,701.87

Finding the Fourth Proportional to 31,408.70, 47,121.85 and 12,701.87

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Solution

The fourth proportional to 31,408.70, 47,121.85 and 12,701.87 is: 19,056.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,408.70 : 47,121.85 = 12,701.87 : x
  2. Step 2: Convert to fraction form
    31,408.70/47,121.85 = 12,701.87/x
  3. Step 3: Cross multiply
    31,408.70x = 47,121.85 × 12,701.87
  4. Step 4: Simplify right side
    31,408.70x = 598,535,787.26
  5. Step 5: Solve for x
    x = 598,535,787.26/31,408.70
  6. Step 6: Final answer
    x = 19,056.37

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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.