Home / 11,686.80-16,127.50-6,381.70

Finding the Fourth Proportional to 11,686.80, 16,127.50 and 6,381.70

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Solution

The fourth proportional to 11,686.80, 16,127.50 and 6,381.70 is: 8,806.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686.80 : 16,127.50 = 6,381.70 : x
  2. Step 2: Convert to fraction form
    11,686.80/16,127.50 = 6,381.70/x
  3. Step 3: Cross multiply
    11,686.80x = 16,127.50 × 6,381.70
  4. Step 4: Simplify right side
    11,686.80x = 102,920,866.75
  5. Step 5: Solve for x
    x = 102,920,866.75/11,686.80
  6. Step 6: Final answer
    x = 8,806.59

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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.