Home / 11,457.25-15,811.19-6,422.59

Finding the Fourth Proportional to 11,457.25, 15,811.19 and 6,422.59

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Solution

The fourth proportional to 11,457.25, 15,811.19 and 6,422.59 is: 8,863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,457.25 : 15,811.19 = 6,422.59 : x
  2. Step 2: Convert to fraction form
    11,457.25/15,811.19 = 6,422.59/x
  3. Step 3: Cross multiply
    11,457.25x = 15,811.19 × 6,422.59
  4. Step 4: Simplify right side
    11,457.25x = 101,548,679.61
  5. Step 5: Solve for x
    x = 101,548,679.61/11,457.25
  6. Step 6: Final answer
    x = 8,863.27

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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.