Home / 11,767.61-16,239.34-6,390.05

Finding the Fourth Proportional to 11,767.61, 16,239.34 and 6,390.05

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Solution

The fourth proportional to 11,767.61, 16,239.34 and 6,390.05 is: 8,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,767.61 : 16,239.34 = 6,390.05 : x
  2. Step 2: Convert to fraction form
    11,767.61/16,239.34 = 6,390.05/x
  3. Step 3: Cross multiply
    11,767.61x = 16,239.34 × 6,390.05
  4. Step 4: Simplify right side
    11,767.61x = 103,770,194.57
  5. Step 5: Solve for x
    x = 103,770,194.57/11,767.61
  6. Step 6: Final answer
    x = 8,818.29

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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.