Home / 11,820.13-16,311.68-6,785.17

Finding the Fourth Proportional to 11,820.13, 16,311.68 and 6,785.17

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Solution

The fourth proportional to 11,820.13, 16,311.68 and 6,785.17 is: 9,363.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.13 : 16,311.68 = 6,785.17 : x
  2. Step 2: Convert to fraction form
    11,820.13/16,311.68 = 6,785.17/x
  3. Step 3: Cross multiply
    11,820.13x = 16,311.68 × 6,785.17
  4. Step 4: Simplify right side
    11,820.13x = 110,677,472.52
  5. Step 5: Solve for x
    x = 110,677,472.52/11,820.13
  6. Step 6: Final answer
    x = 9,363.48

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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.