Home / 12,185.86-16,816.14-6,881.17

Finding the Fourth Proportional to 12,185.86, 16,816.14 and 6,881.17

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Solution

The fourth proportional to 12,185.86, 16,816.14 and 6,881.17 is: 9,495.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.86 : 16,816.14 = 6,881.17 : x
  2. Step 2: Convert to fraction form
    12,185.86/16,816.14 = 6,881.17/x
  3. Step 3: Cross multiply
    12,185.86x = 16,816.14 × 6,881.17
  4. Step 4: Simplify right side
    12,185.86x = 115,714,718.08
  5. Step 5: Solve for x
    x = 115,714,718.08/12,185.86
  6. Step 6: Final answer
    x = 9,495.82

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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.