Home / 12,186.96-16,811.40-7,702.32

Finding the Fourth Proportional to 12,186.96, 16,811.40 and 7,702.32

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Solution

The fourth proportional to 12,186.96, 16,811.40 and 7,702.32 is: 10,625.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.96 : 16,811.40 = 7,702.32 : x
  2. Step 2: Convert to fraction form
    12,186.96/16,811.40 = 7,702.32/x
  3. Step 3: Cross multiply
    12,186.96x = 16,811.40 × 7,702.32
  4. Step 4: Simplify right side
    12,186.96x = 129,486,782.45
  5. Step 5: Solve for x
    x = 129,486,782.45/12,186.96
  6. Step 6: Final answer
    x = 10,625.03

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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.