Home / 18,020.88-27,005.40-10,213.20

Finding the Fourth Proportional to 18,020.88, 27,005.40 and 10,213.20

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Solution

The fourth proportional to 18,020.88, 27,005.40 and 10,213.20 is: 15,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,020.88 : 27,005.40 = 10,213.20 : x
  2. Step 2: Convert to fraction form
    18,020.88/27,005.40 = 10,213.20/x
  3. Step 3: Cross multiply
    18,020.88x = 27,005.40 × 10,213.20
  4. Step 4: Simplify right side
    18,020.88x = 275,811,551.28
  5. Step 5: Solve for x
    x = 275,811,551.28/18,020.88
  6. Step 6: Final answer
    x = 15,305.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.