Home / 11,321.77-15,618.63-6,782.26

Finding the Fourth Proportional to 11,321.77, 15,618.63 and 6,782.26

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Solution

The fourth proportional to 11,321.77, 15,618.63 and 6,782.26 is: 9,356.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.77 : 15,618.63 = 6,782.26 : x
  2. Step 2: Convert to fraction form
    11,321.77/15,618.63 = 6,782.26/x
  3. Step 3: Cross multiply
    11,321.77x = 15,618.63 × 6,782.26
  4. Step 4: Simplify right side
    11,321.77x = 105,929,609.50
  5. Step 5: Solve for x
    x = 105,929,609.50/11,321.77
  6. Step 6: Final answer
    x = 9,356.28

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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.