Home / 12,161.04-16,782.21-6,855.90

Finding the Fourth Proportional to 12,161.04, 16,782.21 and 6,855.90

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Solution

The fourth proportional to 12,161.04, 16,782.21 and 6,855.90 is: 9,461.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.04 : 16,782.21 = 6,855.90 : x
  2. Step 2: Convert to fraction form
    12,161.04/16,782.21 = 6,855.90/x
  3. Step 3: Cross multiply
    12,161.04x = 16,782.21 × 6,855.90
  4. Step 4: Simplify right side
    12,161.04x = 115,057,153.54
  5. Step 5: Solve for x
    x = 115,057,153.54/12,161.04
  6. Step 6: Final answer
    x = 9,461.13

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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.