Home / 13,319.74-18,381.30-7,351.66

Finding the Fourth Proportional to 13,319.74, 18,381.30 and 7,351.66

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Solution

The fourth proportional to 13,319.74, 18,381.30 and 7,351.66 is: 10,145.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.74 : 18,381.30 = 7,351.66 : x
  2. Step 2: Convert to fraction form
    13,319.74/18,381.30 = 7,351.66/x
  3. Step 3: Cross multiply
    13,319.74x = 18,381.30 × 7,351.66
  4. Step 4: Simplify right side
    13,319.74x = 135,133,067.96
  5. Step 5: Solve for x
    x = 135,133,067.96/13,319.74
  6. Step 6: Final answer
    x = 10,145.32

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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.