Home / 18,619.14-25,716.33-12,320.58

Finding the Fourth Proportional to 18,619.14, 25,716.33 and 12,320.58

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Solution

The fourth proportional to 18,619.14, 25,716.33 and 12,320.58 is: 17,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.14 : 25,716.33 = 12,320.58 : x
  2. Step 2: Convert to fraction form
    18,619.14/25,716.33 = 12,320.58/x
  3. Step 3: Cross multiply
    18,619.14x = 25,716.33 × 12,320.58
  4. Step 4: Simplify right side
    18,619.14x = 316,840,101.07
  5. Step 5: Solve for x
    x = 316,840,101.07/18,619.14
  6. Step 6: Final answer
    x = 17,016.90

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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.