Home / 29,120.90-43,643.55-13,505.30

Finding the Fourth Proportional to 29,120.90, 43,643.55 and 13,505.30

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Solution

The fourth proportional to 29,120.90, 43,643.55 and 13,505.30 is: 20,240.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,120.90 : 43,643.55 = 13,505.30 : x
  2. Step 2: Convert to fraction form
    29,120.90/43,643.55 = 13,505.30/x
  3. Step 3: Cross multiply
    29,120.90x = 43,643.55 × 13,505.30
  4. Step 4: Simplify right side
    29,120.90x = 589,419,235.82
  5. Step 5: Solve for x
    x = 589,419,235.82/29,120.90
  6. Step 6: Final answer
    x = 20,240.42

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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.