Home / 14,042.90-21,002.38-12,493.78

Finding the Fourth Proportional to 14,042.90, 21,002.38 and 12,493.78

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Solution

The fourth proportional to 14,042.90, 21,002.38 and 12,493.78 is: 18,685.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,042.90 : 21,002.38 = 12,493.78 : x
  2. Step 2: Convert to fraction form
    14,042.90/21,002.38 = 12,493.78/x
  3. Step 3: Cross multiply
    14,042.90x = 21,002.38 × 12,493.78
  4. Step 4: Simplify right side
    14,042.90x = 262,399,115.20
  5. Step 5: Solve for x
    x = 262,399,115.20/14,042.90
  6. Step 6: Final answer
    x = 18,685.54

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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.