Home / 31,355.58-47,022.44-13,815.84

Finding the Fourth Proportional to 31,355.58, 47,022.44 and 13,815.84

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Solution

The fourth proportional to 31,355.58, 47,022.44 and 13,815.84 is: 20,718.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,355.58 : 47,022.44 = 13,815.84 : x
  2. Step 2: Convert to fraction form
    31,355.58/47,022.44 = 13,815.84/x
  3. Step 3: Cross multiply
    31,355.58x = 47,022.44 × 13,815.84
  4. Step 4: Simplify right side
    31,355.58x = 649,654,438.37
  5. Step 5: Solve for x
    x = 649,654,438.37/31,355.58
  6. Step 6: Final answer
    x = 20,718.94

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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.