Home / 11,695.26-16,139.67-6,390.30

Finding the Fourth Proportional to 11,695.26, 16,139.67 and 6,390.30

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Solution

The fourth proportional to 11,695.26, 16,139.67 and 6,390.30 is: 8,818.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.26 : 16,139.67 = 6,390.30 : x
  2. Step 2: Convert to fraction form
    11,695.26/16,139.67 = 6,390.30/x
  3. Step 3: Cross multiply
    11,695.26x = 16,139.67 × 6,390.30
  4. Step 4: Simplify right side
    11,695.26x = 103,137,333.20
  5. Step 5: Solve for x
    x = 103,137,333.20/11,695.26
  6. Step 6: Final answer
    x = 8,818.73

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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.