Home / 11,218.92-15,483.90-8,561.28

Finding the Fourth Proportional to 11,218.92, 15,483.90 and 8,561.28

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Solution

The fourth proportional to 11,218.92, 15,483.90 and 8,561.28 is: 11,815.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.92 : 15,483.90 = 8,561.28 : x
  2. Step 2: Convert to fraction form
    11,218.92/15,483.90 = 8,561.28/x
  3. Step 3: Cross multiply
    11,218.92x = 15,483.90 × 8,561.28
  4. Step 4: Simplify right side
    11,218.92x = 132,562,003.39
  5. Step 5: Solve for x
    x = 132,562,003.39/11,218.92
  6. Step 6: Final answer
    x = 11,815.93

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Double scale
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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.