Home / 11,930.30-16,460.84-6,623.78

Finding the Fourth Proportional to 11,930.30, 16,460.84 and 6,623.78

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Solution

The fourth proportional to 11,930.30, 16,460.84 and 6,623.78 is: 9,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,930.30 : 16,460.84 = 6,623.78 : x
  2. Step 2: Convert to fraction form
    11,930.30/16,460.84 = 6,623.78/x
  3. Step 3: Cross multiply
    11,930.30x = 16,460.84 × 6,623.78
  4. Step 4: Simplify right side
    11,930.30x = 109,033,040.49
  5. Step 5: Solve for x
    x = 109,033,040.49/11,930.30
  6. Step 6: Final answer
    x = 9,139.17

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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.