Home / 21,282.21-29,369.48-12,330.23

Finding the Fourth Proportional to 21,282.21, 29,369.48 and 12,330.23

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Solution

The fourth proportional to 21,282.21, 29,369.48 and 12,330.23 is: 17,015.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.21 : 29,369.48 = 12,330.23 : x
  2. Step 2: Convert to fraction form
    21,282.21/29,369.48 = 12,330.23/x
  3. Step 3: Cross multiply
    21,282.21x = 29,369.48 × 12,330.23
  4. Step 4: Simplify right side
    21,282.21x = 362,132,234.88
  5. Step 5: Solve for x
    x = 362,132,234.88/21,282.21
  6. Step 6: Final answer
    x = 17,015.73

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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.