Home / 11,729.12-16,185.75-6,423.98

Finding the Fourth Proportional to 11,729.12, 16,185.75 and 6,423.98

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Solution

The fourth proportional to 11,729.12, 16,185.75 and 6,423.98 is: 8,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,729.12 : 16,185.75 = 6,423.98 : x
  2. Step 2: Convert to fraction form
    11,729.12/16,185.75 = 6,423.98/x
  3. Step 3: Cross multiply
    11,729.12x = 16,185.75 × 6,423.98
  4. Step 4: Simplify right side
    11,729.12x = 103,976,934.29
  5. Step 5: Solve for x
    x = 103,976,934.29/11,729.12
  6. Step 6: Final answer
    x = 8,864.85

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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.