Home / 11,820.68-16,313.01-6,515.90

Finding the Fourth Proportional to 11,820.68, 16,313.01 and 6,515.90

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Solution

The fourth proportional to 11,820.68, 16,313.01 and 6,515.90 is: 8,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.68 : 16,313.01 = 6,515.90 : x
  2. Step 2: Convert to fraction form
    11,820.68/16,313.01 = 6,515.90/x
  3. Step 3: Cross multiply
    11,820.68x = 16,313.01 × 6,515.90
  4. Step 4: Simplify right side
    11,820.68x = 106,293,941.86
  5. Step 5: Solve for x
    x = 106,293,941.86/11,820.68
  6. Step 6: Final answer
    x = 8,992.20

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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.