Home / 21,408.87-32,102.37-13,090.98

Finding the Fourth Proportional to 21,408.87, 32,102.37 and 13,090.98

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Solution

The fourth proportional to 21,408.87, 32,102.37 and 13,090.98 is: 19,629.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.87 : 32,102.37 = 13,090.98 : x
  2. Step 2: Convert to fraction form
    21,408.87/32,102.37 = 13,090.98/x
  3. Step 3: Cross multiply
    21,408.87x = 32,102.37 × 13,090.98
  4. Step 4: Simplify right side
    21,408.87x = 420,251,483.62
  5. Step 5: Solve for x
    x = 420,251,483.62/21,408.87
  6. Step 6: Final answer
    x = 19,629.78

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1.5x scale

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.