Home / 11,171.25-15,416.53-6,457.05

Finding the Fourth Proportional to 11,171.25, 15,416.53 and 6,457.05

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Solution

The fourth proportional to 11,171.25, 15,416.53 and 6,457.05 is: 8,910.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,171.25 : 15,416.53 = 6,457.05 : x
  2. Step 2: Convert to fraction form
    11,171.25/15,416.53 = 6,457.05/x
  3. Step 3: Cross multiply
    11,171.25x = 15,416.53 × 6,457.05
  4. Step 4: Simplify right side
    11,171.25x = 99,545,288.89
  5. Step 5: Solve for x
    x = 99,545,288.89/11,171.25
  6. Step 6: Final answer
    x = 8,910.85

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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.