Home / 11,820.76-16,313.04-6,515.77

Finding the Fourth Proportional to 11,820.76, 16,313.04 and 6,515.77

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Solution

The fourth proportional to 11,820.76, 16,313.04 and 6,515.77 is: 8,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.76 : 16,313.04 = 6,515.77 : x
  2. Step 2: Convert to fraction form
    11,820.76/16,313.04 = 6,515.77/x
  3. Step 3: Cross multiply
    11,820.76x = 16,313.04 × 6,515.77
  4. Step 4: Simplify right side
    11,820.76x = 106,292,016.64
  5. Step 5: Solve for x
    x = 106,292,016.64/11,820.76
  6. Step 6: Final answer
    x = 8,991.98

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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.