Home / 11,678.60-16,116.36-7,200.56

Finding the Fourth Proportional to 11,678.60, 16,116.36 and 7,200.56

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Solution

The fourth proportional to 11,678.60, 16,116.36 and 7,200.56 is: 9,936.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.60 : 16,116.36 = 7,200.56 : x
  2. Step 2: Convert to fraction form
    11,678.60/16,116.36 = 7,200.56/x
  3. Step 3: Cross multiply
    11,678.60x = 16,116.36 × 7,200.56
  4. Step 4: Simplify right side
    11,678.60x = 116,046,817.16
  5. Step 5: Solve for x
    x = 116,046,817.16/11,678.60
  6. Step 6: Final answer
    x = 9,936.71

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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.