Home / 11,336.60-15,628.06-8,187.80

Finding the Fourth Proportional to 11,336.60, 15,628.06 and 8,187.80

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Solution

The fourth proportional to 11,336.60, 15,628.06 and 8,187.80 is: 11,287.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,336.60 : 15,628.06 = 8,187.80 : x
  2. Step 2: Convert to fraction form
    11,336.60/15,628.06 = 8,187.80/x
  3. Step 3: Cross multiply
    11,336.60x = 15,628.06 × 8,187.80
  4. Step 4: Simplify right side
    11,336.60x = 127,959,429.67
  5. Step 5: Solve for x
    x = 127,959,429.67/11,336.60
  6. Step 6: Final answer
    x = 11,287.28

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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.