Home / 13,999.90-21,003.45-5,234.86

Finding the Fourth Proportional to 13,999.90, 21,003.45 and 5,234.86

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Solution

The fourth proportional to 13,999.90, 21,003.45 and 5,234.86 is: 7,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.90 : 21,003.45 = 5,234.86 : x
  2. Step 2: Convert to fraction form
    13,999.90/21,003.45 = 5,234.86/x
  3. Step 3: Cross multiply
    13,999.90x = 21,003.45 × 5,234.86
  4. Step 4: Simplify right side
    13,999.90x = 109,950,120.27
  5. Step 5: Solve for x
    x = 109,950,120.27/13,999.90
  6. Step 6: Final answer
    x = 7,853.64

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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.