Home / 11,695.32-16,139.82-6,390.60

Finding the Fourth Proportional to 11,695.32, 16,139.82 and 6,390.60

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Solution

The fourth proportional to 11,695.32, 16,139.82 and 6,390.60 is: 8,819.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.32 : 16,139.82 = 6,390.60 : x
  2. Step 2: Convert to fraction form
    11,695.32/16,139.82 = 6,390.60/x
  3. Step 3: Cross multiply
    11,695.32x = 16,139.82 × 6,390.60
  4. Step 4: Simplify right side
    11,695.32x = 103,143,133.69
  5. Step 5: Solve for x
    x = 103,143,133.69/11,695.32
  6. Step 6: Final answer
    x = 8,819.18

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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.