Home / 11,731.76-16,190.08-6,426.80

Finding the Fourth Proportional to 11,731.76, 16,190.08 and 6,426.80

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Solution

The fourth proportional to 11,731.76, 16,190.08 and 6,426.80 is: 8,869.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,731.76 : 16,190.08 = 6,426.80 : x
  2. Step 2: Convert to fraction form
    11,731.76/16,190.08 = 6,426.80/x
  3. Step 3: Cross multiply
    11,731.76x = 16,190.08 × 6,426.80
  4. Step 4: Simplify right side
    11,731.76x = 104,050,406.14
  5. Step 5: Solve for x
    x = 104,050,406.14/11,731.76
  6. Step 6: Final answer
    x = 8,869.12

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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.