Home / 11,761.89-16,231.50-6,457.20

Finding the Fourth Proportional to 11,761.89, 16,231.50 and 6,457.20

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Solution

The fourth proportional to 11,761.89, 16,231.50 and 6,457.20 is: 8,910.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,761.89 : 16,231.50 = 6,457.20 : x
  2. Step 2: Convert to fraction form
    11,761.89/16,231.50 = 6,457.20/x
  3. Step 3: Cross multiply
    11,761.89x = 16,231.50 × 6,457.20
  4. Step 4: Simplify right side
    11,761.89x = 104,810,041.80
  5. Step 5: Solve for x
    x = 104,810,041.80/11,761.89
  6. Step 6: Final answer
    x = 8,910.99

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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.