Home / 18,919.97-26,109.56-10,966.81

Finding the Fourth Proportional to 18,919.97, 26,109.56 and 10,966.81

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Solution

The fourth proportional to 18,919.97, 26,109.56 and 10,966.81 is: 15,134.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.97 : 26,109.56 = 10,966.81 : x
  2. Step 2: Convert to fraction form
    18,919.97/26,109.56 = 10,966.81/x
  3. Step 3: Cross multiply
    18,919.97x = 26,109.56 × 10,966.81
  4. Step 4: Simplify right side
    18,919.97x = 286,338,463.60
  5. Step 5: Solve for x
    x = 286,338,463.60/18,919.97
  6. Step 6: Final answer
    x = 15,134.19

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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.