Home / 28,904.20-43,355.69-13,321.82

Finding the Fourth Proportional to 28,904.20, 43,355.69 and 13,321.82

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Solution

The fourth proportional to 28,904.20, 43,355.69 and 13,321.82 is: 19,982.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.20 : 43,355.69 = 13,321.82 : x
  2. Step 2: Convert to fraction form
    28,904.20/43,355.69 = 13,321.82/x
  3. Step 3: Cross multiply
    28,904.20x = 43,355.69 × 13,321.82
  4. Step 4: Simplify right side
    28,904.20x = 577,576,698.16
  5. Step 5: Solve for x
    x = 577,576,698.16/28,904.20
  6. Step 6: Final answer
    x = 19,982.45

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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.