Home / 12,939.11-19,359.45-7,996.49

Finding the Fourth Proportional to 12,939.11, 19,359.45 and 7,996.49

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Solution

The fourth proportional to 12,939.11, 19,359.45 and 7,996.49 is: 11,964.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.11 : 19,359.45 = 7,996.49 : x
  2. Step 2: Convert to fraction form
    12,939.11/19,359.45 = 7,996.49/x
  3. Step 3: Cross multiply
    12,939.11x = 19,359.45 × 7,996.49
  4. Step 4: Simplify right side
    12,939.11x = 154,807,551.53
  5. Step 5: Solve for x
    x = 154,807,551.53/12,939.11
  6. Step 6: Final answer
    x = 11,964.32

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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.