Home / 14,128.85-21,167.44-6,618.62

Finding the Fourth Proportional to 14,128.85, 21,167.44 and 6,618.62

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Solution

The fourth proportional to 14,128.85, 21,167.44 and 6,618.62 is: 9,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,128.85 : 21,167.44 = 6,618.62 : x
  2. Step 2: Convert to fraction form
    14,128.85/21,167.44 = 6,618.62/x
  3. Step 3: Cross multiply
    14,128.85x = 21,167.44 × 6,618.62
  4. Step 4: Simplify right side
    14,128.85x = 140,099,278.10
  5. Step 5: Solve for x
    x = 140,099,278.10/14,128.85
  6. Step 6: Final answer
    x = 9,915.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.