Home / 31,991.81-47,942.61-15,106.80

Finding the Fourth Proportional to 31,991.81, 47,942.61 and 15,106.80

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Solution

The fourth proportional to 31,991.81, 47,942.61 and 15,106.80 is: 22,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,991.81 : 47,942.61 = 15,106.80 : x
  2. Step 2: Convert to fraction form
    31,991.81/47,942.61 = 15,106.80/x
  3. Step 3: Cross multiply
    31,991.81x = 47,942.61 × 15,106.80
  4. Step 4: Simplify right side
    31,991.81x = 724,259,502.84
  5. Step 5: Solve for x
    x = 724,259,502.84/31,991.81
  6. Step 6: Final answer
    x = 22,638.90

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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.