Home / 14,378.20-19,840.30-8,090.44

Finding the Fourth Proportional to 14,378.20, 19,840.30 and 8,090.44

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Solution

The fourth proportional to 14,378.20, 19,840.30 and 8,090.44 is: 11,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.20 : 19,840.30 = 8,090.44 : x
  2. Step 2: Convert to fraction form
    14,378.20/19,840.30 = 8,090.44/x
  3. Step 3: Cross multiply
    14,378.20x = 19,840.30 × 8,090.44
  4. Step 4: Simplify right side
    14,378.20x = 160,516,756.73
  5. Step 5: Solve for x
    x = 160,516,756.73/14,378.20
  6. Step 6: Final answer
    x = 11,163.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.