Home / 11,765.18-16,235.95-6,387.61

Finding the Fourth Proportional to 11,765.18, 16,235.95 and 6,387.61

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Solution

The fourth proportional to 11,765.18, 16,235.95 and 6,387.61 is: 8,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,765.18 : 16,235.95 = 6,387.61 : x
  2. Step 2: Convert to fraction form
    11,765.18/16,235.95 = 6,387.61/x
  3. Step 3: Cross multiply
    11,765.18x = 16,235.95 × 6,387.61
  4. Step 4: Simplify right side
    11,765.18x = 103,708,835.40
  5. Step 5: Solve for x
    x = 103,708,835.40/11,765.18
  6. Step 6: Final answer
    x = 8,814.90

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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.