Home / 12,161.90-16,784.21-6,857.06

Finding the Fourth Proportional to 12,161.90, 16,784.21 and 6,857.06

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Solution

The fourth proportional to 12,161.90, 16,784.21 and 6,857.06 is: 9,463.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.90 : 16,784.21 = 6,857.06 : x
  2. Step 2: Convert to fraction form
    12,161.90/16,784.21 = 6,857.06/x
  3. Step 3: Cross multiply
    12,161.90x = 16,784.21 × 6,857.06
  4. Step 4: Simplify right side
    12,161.90x = 115,090,335.02
  5. Step 5: Solve for x
    x = 115,090,335.02/12,161.90
  6. Step 6: Final answer
    x = 9,463.19

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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.