Home / 40,429.50-60,647.40-18,255.30

Finding the Fourth Proportional to 40,429.50, 60,647.40 and 18,255.30

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Solution

The fourth proportional to 40,429.50, 60,647.40 and 18,255.30 is: 27,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,429.50 : 60,647.40 = 18,255.30 : x
  2. Step 2: Convert to fraction form
    40,429.50/60,647.40 = 18,255.30/x
  3. Step 3: Cross multiply
    40,429.50x = 60,647.40 × 18,255.30
  4. Step 4: Simplify right side
    40,429.50x = 1,107,136,481.22
  5. Step 5: Solve for x
    x = 1,107,136,481.22/40,429.50
  6. Step 6: Final answer
    x = 27,384.37

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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.