Home / 21,317.22-29,420.44-12,245.42

Finding the Fourth Proportional to 21,317.22, 29,420.44 and 12,245.42

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Solution

The fourth proportional to 21,317.22, 29,420.44 and 12,245.42 is: 16,900.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.22 : 29,420.44 = 12,245.42 : x
  2. Step 2: Convert to fraction form
    21,317.22/29,420.44 = 12,245.42/x
  3. Step 3: Cross multiply
    21,317.22x = 29,420.44 × 12,245.42
  4. Step 4: Simplify right side
    21,317.22x = 360,265,687.32
  5. Step 5: Solve for x
    x = 360,265,687.32/21,317.22
  6. Step 6: Final answer
    x = 16,900.22

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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.