Home / 11,678.49-16,116.24-6,642.70

Finding the Fourth Proportional to 11,678.49, 16,116.24 and 6,642.70

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Solution

The fourth proportional to 11,678.49, 16,116.24 and 6,642.70 is: 9,166.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.49 : 16,116.24 = 6,642.70 : x
  2. Step 2: Convert to fraction form
    11,678.49/16,116.24 = 6,642.70/x
  3. Step 3: Cross multiply
    11,678.49x = 16,116.24 × 6,642.70
  4. Step 4: Simplify right side
    11,678.49x = 107,055,347.45
  5. Step 5: Solve for x
    x = 107,055,347.45/11,678.49
  6. Step 6: Final answer
    x = 9,166.88

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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.