Home / 13,245.24-18,278.92-7,939.04

Finding the Fourth Proportional to 13,245.24, 18,278.92 and 7,939.04

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Solution

The fourth proportional to 13,245.24, 18,278.92 and 7,939.04 is: 10,956.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.24 : 18,278.92 = 7,939.04 : x
  2. Step 2: Convert to fraction form
    13,245.24/18,278.92 = 7,939.04/x
  3. Step 3: Cross multiply
    13,245.24x = 18,278.92 × 7,939.04
  4. Step 4: Simplify right side
    13,245.24x = 145,117,077.04
  5. Step 5: Solve for x
    x = 145,117,077.04/13,245.24
  6. Step 6: Final answer
    x = 10,956.17

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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.