Home / 18,972.94-28,460.78-7,286.16

Finding the Fourth Proportional to 18,972.94, 28,460.78 and 7,286.16

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Solution

The fourth proportional to 18,972.94, 28,460.78 and 7,286.16 is: 10,929.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.94 : 28,460.78 = 7,286.16 : x
  2. Step 2: Convert to fraction form
    18,972.94/28,460.78 = 7,286.16/x
  3. Step 3: Cross multiply
    18,972.94x = 28,460.78 × 7,286.16
  4. Step 4: Simplify right side
    18,972.94x = 207,369,796.80
  5. Step 5: Solve for x
    x = 207,369,796.80/18,972.94
  6. Step 6: Final answer
    x = 10,929.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.