Home / 15,531.41-21,433.37-8,457.86

Finding the Fourth Proportional to 15,531.41, 21,433.37 and 8,457.86

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Solution

The fourth proportional to 15,531.41, 21,433.37 and 8,457.86 is: 11,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.41 : 21,433.37 = 8,457.86 : x
  2. Step 2: Convert to fraction form
    15,531.41/21,433.37 = 8,457.86/x
  3. Step 3: Cross multiply
    15,531.41x = 21,433.37 × 8,457.86
  4. Step 4: Simplify right side
    15,531.41x = 181,280,293.33
  5. Step 5: Solve for x
    x = 181,280,293.33/15,531.41
  6. Step 6: Final answer
    x = 11,671.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.