Home / 19,661.87-27,133.21-13,696.85

Finding the Fourth Proportional to 19,661.87, 27,133.21 and 13,696.85

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Solution

The fourth proportional to 19,661.87, 27,133.21 and 13,696.85 is: 18,901.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,661.87 : 27,133.21 = 13,696.85 : x
  2. Step 2: Convert to fraction form
    19,661.87/27,133.21 = 13,696.85/x
  3. Step 3: Cross multiply
    19,661.87x = 27,133.21 × 13,696.85
  4. Step 4: Simplify right side
    19,661.87x = 371,639,507.39
  5. Step 5: Solve for x
    x = 371,639,507.39/19,661.87
  6. Step 6: Final answer
    x = 18,901.53

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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.