Home / 11,949.10-16,488.84-6,643.06

Finding the Fourth Proportional to 11,949.10, 16,488.84 and 6,643.06

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Solution

The fourth proportional to 11,949.10, 16,488.84 and 6,643.06 is: 9,166.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.10 : 16,488.84 = 6,643.06 : x
  2. Step 2: Convert to fraction form
    11,949.10/16,488.84 = 6,643.06/x
  3. Step 3: Cross multiply
    11,949.10x = 16,488.84 × 6,643.06
  4. Step 4: Simplify right side
    11,949.10x = 109,536,353.45
  5. Step 5: Solve for x
    x = 109,536,353.45/11,949.10
  6. Step 6: Final answer
    x = 9,166.91

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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.