Home / 12,313.79-16,992.33-7,278.48

Finding the Fourth Proportional to 12,313.79, 16,992.33 and 7,278.48

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Solution

The fourth proportional to 12,313.79, 16,992.33 and 7,278.48 is: 10,043.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.79 : 16,992.33 = 7,278.48 : x
  2. Step 2: Convert to fraction form
    12,313.79/16,992.33 = 7,278.48/x
  3. Step 3: Cross multiply
    12,313.79x = 16,992.33 × 7,278.48
  4. Step 4: Simplify right side
    12,313.79x = 123,678,249.10
  5. Step 5: Solve for x
    x = 123,678,249.10/12,313.79
  6. Step 6: Final answer
    x = 10,043.88

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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.