Home / 11,821.18-16,313.08-6,515.88

Finding the Fourth Proportional to 11,821.18, 16,313.08 and 6,515.88

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Solution

The fourth proportional to 11,821.18, 16,313.08 and 6,515.88 is: 8,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.18 : 16,313.08 = 6,515.88 : x
  2. Step 2: Convert to fraction form
    11,821.18/16,313.08 = 6,515.88/x
  3. Step 3: Cross multiply
    11,821.18x = 16,313.08 × 6,515.88
  4. Step 4: Simplify right side
    11,821.18x = 106,294,071.71
  5. Step 5: Solve for x
    x = 106,294,071.71/11,821.18
  6. Step 6: Final answer
    x = 8,991.83

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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.