Home / 11,255.68-15,518.26-7,712.56

Finding the Fourth Proportional to 11,255.68, 15,518.26 and 7,712.56

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Solution

The fourth proportional to 11,255.68, 15,518.26 and 7,712.56 is: 10,633.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,255.68 : 15,518.26 = 7,712.56 : x
  2. Step 2: Convert to fraction form
    11,255.68/15,518.26 = 7,712.56/x
  3. Step 3: Cross multiply
    11,255.68x = 15,518.26 × 7,712.56
  4. Step 4: Simplify right side
    11,255.68x = 119,685,511.35
  5. Step 5: Solve for x
    x = 119,685,511.35/11,255.68
  6. Step 6: Final answer
    x = 10,633.34

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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.