Home / 21,245.12-29,317.49-11,684.93

Finding the Fourth Proportional to 21,245.12, 29,317.49 and 11,684.93

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Solution

The fourth proportional to 21,245.12, 29,317.49 and 11,684.93 is: 16,124.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.12 : 29,317.49 = 11,684.93 : x
  2. Step 2: Convert to fraction form
    21,245.12/29,317.49 = 11,684.93/x
  3. Step 3: Cross multiply
    21,245.12x = 29,317.49 × 11,684.93
  4. Step 4: Simplify right side
    21,245.12x = 342,572,818.43
  5. Step 5: Solve for x
    x = 342,572,818.43/21,245.12
  6. Step 6: Final answer
    x = 16,124.78

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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.