Home / 11,690.99-16,133.10-6,385.68

Finding the Fourth Proportional to 11,690.99, 16,133.10 and 6,385.68

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Solution

The fourth proportional to 11,690.99, 16,133.10 and 6,385.68 is: 8,811.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.99 : 16,133.10 = 6,385.68 : x
  2. Step 2: Convert to fraction form
    11,690.99/16,133.10 = 6,385.68/x
  3. Step 3: Cross multiply
    11,690.99x = 16,133.10 × 6,385.68
  4. Step 4: Simplify right side
    11,690.99x = 103,020,814.01
  5. Step 5: Solve for x
    x = 103,020,814.01/11,690.99
  6. Step 6: Final answer
    x = 8,811.99

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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.