Home / 18,974.88-28,463.70-7,288.10

Finding the Fourth Proportional to 18,974.88, 28,463.70 and 7,288.10

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Solution

The fourth proportional to 18,974.88, 28,463.70 and 7,288.10 is: 10,932.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.88 : 28,463.70 = 7,288.10 : x
  2. Step 2: Convert to fraction form
    18,974.88/28,463.70 = 7,288.10/x
  3. Step 3: Cross multiply
    18,974.88x = 28,463.70 × 7,288.10
  4. Step 4: Simplify right side
    18,974.88x = 207,446,363.77
  5. Step 5: Solve for x
    x = 207,446,363.77/18,974.88
  6. Step 6: Final answer
    x = 10,932.68

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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.