Home / 18,927.93-26,120.55-10,974.78

Finding the Fourth Proportional to 18,927.93, 26,120.55 and 10,974.78

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Solution

The fourth proportional to 18,927.93, 26,120.55 and 10,974.78 is: 15,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927.93 : 26,120.55 = 10,974.78 : x
  2. Step 2: Convert to fraction form
    18,927.93/26,120.55 = 10,974.78/x
  3. Step 3: Cross multiply
    18,927.93x = 26,120.55 × 10,974.78
  4. Step 4: Simplify right side
    18,927.93x = 286,667,289.73
  5. Step 5: Solve for x
    x = 286,667,289.73/18,927.93
  6. Step 6: Final answer
    x = 15,145.20

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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.