Home / 11,690.94-16,132.89-6,384.78

Finding the Fourth Proportional to 11,690.94, 16,132.89 and 6,384.78

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Solution

The fourth proportional to 11,690.94, 16,132.89 and 6,384.78 is: 8,810.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.94 : 16,132.89 = 6,384.78 : x
  2. Step 2: Convert to fraction form
    11,690.94/16,132.89 = 6,384.78/x
  3. Step 3: Cross multiply
    11,690.94x = 16,132.89 × 6,384.78
  4. Step 4: Simplify right side
    11,690.94x = 103,004,953.41
  5. Step 5: Solve for x
    x = 103,004,953.41/11,690.94
  6. Step 6: Final answer
    x = 8,810.66

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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.