Home / 12,157.02-18,235.80-5,581.44

Finding the Fourth Proportional to 12,157.02, 18,235.80 and 5,581.44

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Solution

The fourth proportional to 12,157.02, 18,235.80 and 5,581.44 is: 8,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.02 : 18,235.80 = 5,581.44 : x
  2. Step 2: Convert to fraction form
    12,157.02/18,235.80 = 5,581.44/x
  3. Step 3: Cross multiply
    12,157.02x = 18,235.80 × 5,581.44
  4. Step 4: Simplify right side
    12,157.02x = 101,782,023.55
  5. Step 5: Solve for x
    x = 101,782,023.55/12,157.02
  6. Step 6: Final answer
    x = 8,372.28

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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.