Home / 12,162.40-16,784.90-6,857.56

Finding the Fourth Proportional to 12,162.40, 16,784.90 and 6,857.56

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Solution

The fourth proportional to 12,162.40, 16,784.90 and 6,857.56 is: 9,463.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,162.40 : 16,784.90 = 6,857.56 : x
  2. Step 2: Convert to fraction form
    12,162.40/16,784.90 = 6,857.56/x
  3. Step 3: Cross multiply
    12,162.40x = 16,784.90 × 6,857.56
  4. Step 4: Simplify right side
    12,162.40x = 115,103,458.84
  5. Step 5: Solve for x
    x = 115,103,458.84/12,162.40
  6. Step 6: Final answer
    x = 9,463.88

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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.