Home / 14,321.20-21,438.60-12,593.20

Finding the Fourth Proportional to 14,321.20, 21,438.60 and 12,593.20

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Solution

The fourth proportional to 14,321.20, 21,438.60 and 12,593.20 is: 18,851.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321.20 : 21,438.60 = 12,593.20 : x
  2. Step 2: Convert to fraction form
    14,321.20/21,438.60 = 12,593.20/x
  3. Step 3: Cross multiply
    14,321.20x = 21,438.60 × 12,593.20
  4. Step 4: Simplify right side
    14,321.20x = 269,980,577.52
  5. Step 5: Solve for x
    x = 269,980,577.52/14,321.20
  6. Step 6: Final answer
    x = 18,851.81

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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.