Home / 18,919.73-26,109.21-10,966.56

Finding the Fourth Proportional to 18,919.73, 26,109.21 and 10,966.56

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Solution

The fourth proportional to 18,919.73, 26,109.21 and 10,966.56 is: 15,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.73 : 26,109.21 = 10,966.56 : x
  2. Step 2: Convert to fraction form
    18,919.73/26,109.21 = 10,966.56/x
  3. Step 3: Cross multiply
    18,919.73x = 26,109.21 × 10,966.56
  4. Step 4: Simplify right side
    18,919.73x = 286,328,218.02
  5. Step 5: Solve for x
    x = 286,328,218.02/18,919.73
  6. Step 6: Final answer
    x = 15,133.85

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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.