Home / 11,243.81-16,854.89-4,221.92

Finding the Fourth Proportional to 11,243.81, 16,854.89 and 4,221.92

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Solution

The fourth proportional to 11,243.81, 16,854.89 and 4,221.92 is: 6,328.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,243.81 : 16,854.89 = 4,221.92 : x
  2. Step 2: Convert to fraction form
    11,243.81/16,854.89 = 4,221.92/x
  3. Step 3: Cross multiply
    11,243.81x = 16,854.89 × 4,221.92
  4. Step 4: Simplify right side
    11,243.81x = 71,160,018.22
  5. Step 5: Solve for x
    x = 71,160,018.22/11,243.81
  6. Step 6: Final answer
    x = 6,328.82

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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.