Home / 11,205.72-16,786.30-10,287.18

Finding the Fourth Proportional to 11,205.72, 16,786.30 and 10,287.18

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Solution

The fourth proportional to 11,205.72, 16,786.30 and 10,287.18 is: 15,410.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,205.72 : 16,786.30 = 10,287.18 : x
  2. Step 2: Convert to fraction form
    11,205.72/16,786.30 = 10,287.18/x
  3. Step 3: Cross multiply
    11,205.72x = 16,786.30 × 10,287.18
  4. Step 4: Simplify right side
    11,205.72x = 172,683,689.63
  5. Step 5: Solve for x
    x = 172,683,689.63/11,205.72
  6. Step 6: Final answer
    x = 15,410.32

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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.