Home / 11,695.54-16,139.94-6,390.36

Finding the Fourth Proportional to 11,695.54, 16,139.94 and 6,390.36

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Solution

The fourth proportional to 11,695.54, 16,139.94 and 6,390.36 is: 8,818.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.54 : 16,139.94 = 6,390.36 : x
  2. Step 2: Convert to fraction form
    11,695.54/16,139.94 = 6,390.36/x
  3. Step 3: Cross multiply
    11,695.54x = 16,139.94 × 6,390.36
  4. Step 4: Simplify right side
    11,695.54x = 103,140,026.98
  5. Step 5: Solve for x
    x = 103,140,026.98/11,695.54
  6. Step 6: Final answer
    x = 8,818.75

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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.