Home / 13,351.02-18,422.79-7,381.88

Finding the Fourth Proportional to 13,351.02, 18,422.79 and 7,381.88

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Solution

The fourth proportional to 13,351.02, 18,422.79 and 7,381.88 is: 10,186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.02 : 18,422.79 = 7,381.88 : x
  2. Step 2: Convert to fraction form
    13,351.02/18,422.79 = 7,381.88/x
  3. Step 3: Cross multiply
    13,351.02x = 18,422.79 × 7,381.88
  4. Step 4: Simplify right side
    13,351.02x = 135,994,732.93
  5. Step 5: Solve for x
    x = 135,994,732.93/13,351.02
  6. Step 6: Final answer
    x = 10,186.09

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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.