Home / 11,820.96-16,312.68-6,515.76

Finding the Fourth Proportional to 11,820.96, 16,312.68 and 6,515.76

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Solution

The fourth proportional to 11,820.96, 16,312.68 and 6,515.76 is: 8,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.96 : 16,312.68 = 6,515.76 : x
  2. Step 2: Convert to fraction form
    11,820.96/16,312.68 = 6,515.76/x
  3. Step 3: Cross multiply
    11,820.96x = 16,312.68 × 6,515.76
  4. Step 4: Simplify right side
    11,820.96x = 106,289,507.84
  5. Step 5: Solve for x
    x = 106,289,507.84/11,820.96
  6. Step 6: Final answer
    x = 8,991.61

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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.