Home / 13,712.98-18,923.97-7,744.72

Finding the Fourth Proportional to 13,712.98, 18,923.97 and 7,744.72

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Solution

The fourth proportional to 13,712.98, 18,923.97 and 7,744.72 is: 10,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.98 : 18,923.97 = 7,744.72 : x
  2. Step 2: Convert to fraction form
    13,712.98/18,923.97 = 7,744.72/x
  3. Step 3: Cross multiply
    13,712.98x = 18,923.97 × 7,744.72
  4. Step 4: Simplify right side
    13,712.98x = 146,560,848.94
  5. Step 5: Solve for x
    x = 146,560,848.94/13,712.98
  6. Step 6: Final answer
    x = 10,687.75

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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.