Home / 21,268.11-29,348.73-12,314.98

Finding the Fourth Proportional to 21,268.11, 29,348.73 and 12,314.98

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Solution

The fourth proportional to 21,268.11, 29,348.73 and 12,314.98 is: 16,993.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.11 : 29,348.73 = 12,314.98 : x
  2. Step 2: Convert to fraction form
    21,268.11/29,348.73 = 12,314.98/x
  3. Step 3: Cross multiply
    21,268.11x = 29,348.73 × 12,314.98
  4. Step 4: Simplify right side
    21,268.11x = 361,429,022.98
  5. Step 5: Solve for x
    x = 361,429,022.98/21,268.11
  6. Step 6: Final answer
    x = 16,993.94

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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.