Home / 19,860.27-27,400.32-12,694.38

Finding the Fourth Proportional to 19,860.27, 27,400.32 and 12,694.38

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Solution

The fourth proportional to 19,860.27, 27,400.32 and 12,694.38 is: 17,513.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.27 : 27,400.32 = 12,694.38 : x
  2. Step 2: Convert to fraction form
    19,860.27/27,400.32 = 12,694.38/x
  3. Step 3: Cross multiply
    19,860.27x = 27,400.32 × 12,694.38
  4. Step 4: Simplify right side
    19,860.27x = 347,830,074.20
  5. Step 5: Solve for x
    x = 347,830,074.20/19,860.27
  6. Step 6: Final answer
    x = 17,513.86

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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.