Home / 26,915.21-40,379.48-12,885.90

Finding the Fourth Proportional to 26,915.21, 40,379.48 and 12,885.90

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Solution

The fourth proportional to 26,915.21, 40,379.48 and 12,885.90 is: 19,332.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,915.21 : 40,379.48 = 12,885.90 : x
  2. Step 2: Convert to fraction form
    26,915.21/40,379.48 = 12,885.90/x
  3. Step 3: Cross multiply
    26,915.21x = 40,379.48 × 12,885.90
  4. Step 4: Simplify right side
    26,915.21x = 520,325,941.33
  5. Step 5: Solve for x
    x = 520,325,941.33/26,915.21
  6. Step 6: Final answer
    x = 19,332.04

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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.