Home / 11,785.10-16,263.18-6,479.80

Finding the Fourth Proportional to 11,785.10, 16,263.18 and 6,479.80

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Solution

The fourth proportional to 11,785.10, 16,263.18 and 6,479.80 is: 8,941.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,785.10 : 16,263.18 = 6,479.80 : x
  2. Step 2: Convert to fraction form
    11,785.10/16,263.18 = 6,479.80/x
  3. Step 3: Cross multiply
    11,785.10x = 16,263.18 × 6,479.80
  4. Step 4: Simplify right side
    11,785.10x = 105,382,113.11
  5. Step 5: Solve for x
    x = 105,382,113.11/11,785.10
  6. Step 6: Final answer
    x = 8,941.98

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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.