Home / 11,173.12-15,418.80-6,457.12

Finding the Fourth Proportional to 11,173.12, 15,418.80 and 6,457.12

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Solution

The fourth proportional to 11,173.12, 15,418.80 and 6,457.12 is: 8,910.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,173.12 : 15,418.80 = 6,457.12 : x
  2. Step 2: Convert to fraction form
    11,173.12/15,418.80 = 6,457.12/x
  3. Step 3: Cross multiply
    11,173.12x = 15,418.80 × 6,457.12
  4. Step 4: Simplify right side
    11,173.12x = 99,561,041.86
  5. Step 5: Solve for x
    x = 99,561,041.86/11,173.12
  6. Step 6: Final answer
    x = 8,910.76

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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.