Home / 42,519.24-63,782.10-12,939.60

Finding the Fourth Proportional to 42,519.24, 63,782.10 and 12,939.60

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Solution

The fourth proportional to 42,519.24, 63,782.10 and 12,939.60 is: 19,410.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,519.24 : 63,782.10 = 12,939.60 : x
  2. Step 2: Convert to fraction form
    42,519.24/63,782.10 = 12,939.60/x
  3. Step 3: Cross multiply
    42,519.24x = 63,782.10 × 12,939.60
  4. Step 4: Simplify right side
    42,519.24x = 825,314,861.16
  5. Step 5: Solve for x
    x = 825,314,861.16/42,519.24
  6. Step 6: Final answer
    x = 19,410.39

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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.