Home / 12,162.30-16,781.67-6,856.86

Finding the Fourth Proportional to 12,162.30, 16,781.67 and 6,856.86

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Solution

The fourth proportional to 12,162.30, 16,781.67 and 6,856.86 is: 9,461.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,162.30 : 16,781.67 = 6,856.86 : x
  2. Step 2: Convert to fraction form
    12,162.30/16,781.67 = 6,856.86/x
  3. Step 3: Cross multiply
    12,162.30x = 16,781.67 × 6,856.86
  4. Step 4: Simplify right side
    12,162.30x = 115,069,561.76
  5. Step 5: Solve for x
    x = 115,069,561.76/12,162.30
  6. Step 6: Final answer
    x = 9,461.17

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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.