Home / 21,348.42-29,467.07-12,399.94

Finding the Fourth Proportional to 21,348.42, 29,467.07 and 12,399.94

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Solution

The fourth proportional to 21,348.42, 29,467.07 and 12,399.94 is: 17,115.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.42 : 29,467.07 = 12,399.94 : x
  2. Step 2: Convert to fraction form
    21,348.42/29,467.07 = 12,399.94/x
  3. Step 3: Cross multiply
    21,348.42x = 29,467.07 × 12,399.94
  4. Step 4: Simplify right side
    21,348.42x = 365,389,899.98
  5. Step 5: Solve for x
    x = 365,389,899.98/21,348.42
  6. Step 6: Final answer
    x = 17,115.55

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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.