Home / 14,431.20-19,915.32-8,142.36

Finding the Fourth Proportional to 14,431.20, 19,915.32 and 8,142.36

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Solution

The fourth proportional to 14,431.20, 19,915.32 and 8,142.36 is: 11,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,431.20 : 19,915.32 = 8,142.36 : x
  2. Step 2: Convert to fraction form
    14,431.20/19,915.32 = 8,142.36/x
  3. Step 3: Cross multiply
    14,431.20x = 19,915.32 × 8,142.36
  4. Step 4: Simplify right side
    14,431.20x = 162,157,704.96
  5. Step 5: Solve for x
    x = 162,157,704.96/14,431.20
  6. Step 6: Final answer
    x = 11,236.61

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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.