Home / 11,555.32-15,945.76-6,519.60

Finding the Fourth Proportional to 11,555.32, 15,945.76 and 6,519.60

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Solution

The fourth proportional to 11,555.32, 15,945.76 and 6,519.60 is: 8,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.32 : 15,945.76 = 6,519.60 : x
  2. Step 2: Convert to fraction form
    11,555.32/15,945.76 = 6,519.60/x
  3. Step 3: Cross multiply
    11,555.32x = 15,945.76 × 6,519.60
  4. Step 4: Simplify right side
    11,555.32x = 103,959,976.90
  5. Step 5: Solve for x
    x = 103,959,976.90/11,555.32
  6. Step 6: Final answer
    x = 8,996.72

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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.