Home / 11,821.30-16,312.65-6,516.15

Finding the Fourth Proportional to 11,821.30, 16,312.65 and 6,516.15

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Solution

The fourth proportional to 11,821.30, 16,312.65 and 6,516.15 is: 8,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.30 : 16,312.65 = 6,516.15 : x
  2. Step 2: Convert to fraction form
    11,821.30/16,312.65 = 6,516.15/x
  3. Step 3: Cross multiply
    11,821.30x = 16,312.65 × 6,516.15
  4. Step 4: Simplify right side
    11,821.30x = 106,295,674.30
  5. Step 5: Solve for x
    x = 106,295,674.30/11,821.30
  6. Step 6: Final answer
    x = 8,991.88

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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.