Home / 18,211.36-27,317.58-7,117.60

Finding the Fourth Proportional to 18,211.36, 27,317.58 and 7,117.60

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Solution

The fourth proportional to 18,211.36, 27,317.58 and 7,117.60 is: 10,676.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.36 : 27,317.58 = 7,117.60 : x
  2. Step 2: Convert to fraction form
    18,211.36/27,317.58 = 7,117.60/x
  3. Step 3: Cross multiply
    18,211.36x = 27,317.58 × 7,117.60
  4. Step 4: Simplify right side
    18,211.36x = 194,435,607.41
  5. Step 5: Solve for x
    x = 194,435,607.41/18,211.36
  6. Step 6: Final answer
    x = 10,676.61

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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.