Home / 11,215.79-16,807.80-6,220.37

Finding the Fourth Proportional to 11,215.79, 16,807.80 and 6,220.37

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Solution

The fourth proportional to 11,215.79, 16,807.80 and 6,220.37 is: 9,321.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.79 : 16,807.80 = 6,220.37 : x
  2. Step 2: Convert to fraction form
    11,215.79/16,807.80 = 6,220.37/x
  3. Step 3: Cross multiply
    11,215.79x = 16,807.80 × 6,220.37
  4. Step 4: Simplify right side
    11,215.79x = 104,550,650.85
  5. Step 5: Solve for x
    x = 104,550,650.85/11,215.79
  6. Step 6: Final answer
    x = 9,321.74

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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.