Home / 11,690.12-16,132.79-6,385.16

Finding the Fourth Proportional to 11,690.12, 16,132.79 and 6,385.16

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Solution

The fourth proportional to 11,690.12, 16,132.79 and 6,385.16 is: 8,811.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.12 : 16,132.79 = 6,385.16 : x
  2. Step 2: Convert to fraction form
    11,690.12/16,132.79 = 6,385.16/x
  3. Step 3: Cross multiply
    11,690.12x = 16,132.79 × 6,385.16
  4. Step 4: Simplify right side
    11,690.12x = 103,010,445.40
  5. Step 5: Solve for x
    x = 103,010,445.40/11,690.12
  6. Step 6: Final answer
    x = 8,811.75

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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.