Home / 31,903.05-47,855.18-13,889.46

Finding the Fourth Proportional to 31,903.05, 47,855.18 and 13,889.46

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Solution

The fourth proportional to 31,903.05, 47,855.18 and 13,889.46 is: 20,834.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,903.05 : 47,855.18 = 13,889.46 : x
  2. Step 2: Convert to fraction form
    31,903.05/47,855.18 = 13,889.46/x
  3. Step 3: Cross multiply
    31,903.05x = 47,855.18 × 13,889.46
  4. Step 4: Simplify right side
    31,903.05x = 664,682,538.96
  5. Step 5: Solve for x
    x = 664,682,538.96/31,903.05
  6. Step 6: Final answer
    x = 20,834.45

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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.