Home / 29,138.90-43,741.20-19,297.40

Finding the Fourth Proportional to 29,138.90, 43,741.20 and 19,297.40

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Solution

The fourth proportional to 29,138.90, 43,741.20 and 19,297.40 is: 28,967.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.90 : 43,741.20 = 19,297.40 : x
  2. Step 2: Convert to fraction form
    29,138.90/43,741.20 = 19,297.40/x
  3. Step 3: Cross multiply
    29,138.90x = 43,741.20 × 19,297.40
  4. Step 4: Simplify right side
    29,138.90x = 844,091,432.88
  5. Step 5: Solve for x
    x = 844,091,432.88/29,138.90
  6. Step 6: Final answer
    x = 28,967.86

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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.