Home / 30,720.20-46,068.78-13,181

Finding the Fourth Proportional to 30,720.20, 46,068.78 and 13,181

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Solution

The fourth proportional to 30,720.20, 46,068.78 and 13,181 is: 19,766.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.20 : 46,068.78 = 13,181 : x
  2. Step 2: Convert to fraction form
    30,720.20/46,068.78 = 13,181/x
  3. Step 3: Cross multiply
    30,720.20x = 46,068.78 × 13,181
  4. Step 4: Simplify right side
    30,720.20x = 607,232,589.18
  5. Step 5: Solve for x
    x = 607,232,589.18/30,720.20
  6. Step 6: Final answer
    x = 19,766.56

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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.