Home / 30,977.72-46,467.30-9,921.80

Finding the Fourth Proportional to 30,977.72, 46,467.30 and 9,921.80

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Solution

The fourth proportional to 30,977.72, 46,467.30 and 9,921.80 is: 14,882.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,977.72 : 46,467.30 = 9,921.80 : x
  2. Step 2: Convert to fraction form
    30,977.72/46,467.30 = 9,921.80/x
  3. Step 3: Cross multiply
    30,977.72x = 46,467.30 × 9,921.80
  4. Step 4: Simplify right side
    30,977.72x = 461,039,257.14
  5. Step 5: Solve for x
    x = 461,039,257.14/30,977.72
  6. Step 6: Final answer
    x = 14,882.93

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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.