Home / 11,785.50-16,264.45-6,480.20

Finding the Fourth Proportional to 11,785.50, 16,264.45 and 6,480.20

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Solution

The fourth proportional to 11,785.50, 16,264.45 and 6,480.20 is: 8,942.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,785.50 : 16,264.45 = 6,480.20 : x
  2. Step 2: Convert to fraction form
    11,785.50/16,264.45 = 6,480.20/x
  3. Step 3: Cross multiply
    11,785.50x = 16,264.45 × 6,480.20
  4. Step 4: Simplify right side
    11,785.50x = 105,396,901.20
  5. Step 5: Solve for x
    x = 105,396,901.20/11,785.50
  6. Step 6: Final answer
    x = 8,942.93

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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.