Home / 11,949.18-16,490.42-6,645.70

Finding the Fourth Proportional to 11,949.18, 16,490.42 and 6,645.70

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Solution

The fourth proportional to 11,949.18, 16,490.42 and 6,645.70 is: 9,171.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.18 : 16,490.42 = 6,645.70 : x
  2. Step 2: Convert to fraction form
    11,949.18/16,490.42 = 6,645.70/x
  3. Step 3: Cross multiply
    11,949.18x = 16,490.42 × 6,645.70
  4. Step 4: Simplify right side
    11,949.18x = 109,590,384.19
  5. Step 5: Solve for x
    x = 109,590,384.19/11,949.18
  6. Step 6: Final answer
    x = 9,171.37

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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.