Home / 11,685.08-16,125.40-6,379.90

Finding the Fourth Proportional to 11,685.08, 16,125.40 and 6,379.90

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Solution

The fourth proportional to 11,685.08, 16,125.40 and 6,379.90 is: 8,804.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.08 : 16,125.40 = 6,379.90 : x
  2. Step 2: Convert to fraction form
    11,685.08/16,125.40 = 6,379.90/x
  3. Step 3: Cross multiply
    11,685.08x = 16,125.40 × 6,379.90
  4. Step 4: Simplify right side
    11,685.08x = 102,878,439.46
  5. Step 5: Solve for x
    x = 102,878,439.46/11,685.08
  6. Step 6: Final answer
    x = 8,804.26

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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.