Home / 19,661.49-27,135-12,106.29

Finding the Fourth Proportional to 19,661.49, 27,135 and 12,106.29

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Solution

The fourth proportional to 19,661.49, 27,135 and 12,106.29 is: 16,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.49 : 27,135 = 12,106.29 : x
  2. Step 2: Convert to fraction form
    19,661.49/27,135 = 12,106.29/x
  3. Step 3: Cross multiply
    19,661.49x = 27,135 × 12,106.29
  4. Step 4: Simplify right side
    19,661.49x = 328,504,179.15
  5. Step 5: Solve for x
    x = 328,504,179.15/19,661.49
  6. Step 6: Final answer
    x = 16,708.00

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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.