Home / 31,913.20-47,869.92-11,136.70

Finding the Fourth Proportional to 31,913.20, 47,869.92 and 11,136.70

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Solution

The fourth proportional to 31,913.20, 47,869.92 and 11,136.70 is: 16,705.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,913.20 : 47,869.92 = 11,136.70 : x
  2. Step 2: Convert to fraction form
    31,913.20/47,869.92 = 11,136.70/x
  3. Step 3: Cross multiply
    31,913.20x = 47,869.92 × 11,136.70
  4. Step 4: Simplify right side
    31,913.20x = 533,112,938.06
  5. Step 5: Solve for x
    x = 533,112,938.06/31,913.20
  6. Step 6: Final answer
    x = 16,705.09

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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.