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Finding the Fourth Proportional to 12,313.80, 16,992.92 and 6,724.80

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Solution

The fourth proportional to 12,313.80, 16,992.92 and 6,724.80 is: 9,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.80 : 16,992.92 = 6,724.80 : x
  2. Step 2: Convert to fraction form
    12,313.80/16,992.92 = 6,724.80/x
  3. Step 3: Cross multiply
    12,313.80x = 16,992.92 × 6,724.80
  4. Step 4: Simplify right side
    12,313.80x = 114,273,988.42
  5. Step 5: Solve for x
    x = 114,273,988.42/12,313.80
  6. Step 6: Final answer
    x = 9,280.16

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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.