Home / 11,690.29-16,132.47-6,385.09

Finding the Fourth Proportional to 11,690.29, 16,132.47 and 6,385.09

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Solution

The fourth proportional to 11,690.29, 16,132.47 and 6,385.09 is: 8,811.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.29 : 16,132.47 = 6,385.09 : x
  2. Step 2: Convert to fraction form
    11,690.29/16,132.47 = 6,385.09/x
  3. Step 3: Cross multiply
    11,690.29x = 16,132.47 × 6,385.09
  4. Step 4: Simplify right side
    11,690.29x = 103,007,272.87
  5. Step 5: Solve for x
    x = 103,007,272.87/11,690.29
  6. Step 6: Final answer
    x = 8,811.35

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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.