Home / 18,972.81-26,183.79-11,015.91

Finding the Fourth Proportional to 18,972.81, 26,183.79 and 11,015.91

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Solution

The fourth proportional to 18,972.81, 26,183.79 and 11,015.91 is: 15,202.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.81 : 26,183.79 = 11,015.91 : x
  2. Step 2: Convert to fraction form
    18,972.81/26,183.79 = 11,015.91/x
  3. Step 3: Cross multiply
    18,972.81x = 26,183.79 × 11,015.91
  4. Step 4: Simplify right side
    18,972.81x = 288,438,274.10
  5. Step 5: Solve for x
    x = 288,438,274.10/18,972.81
  6. Step 6: Final answer
    x = 15,202.72

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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.