Home / 13,999.30-21,008.55-6,213.70

Finding the Fourth Proportional to 13,999.30, 21,008.55 and 6,213.70

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Solution

The fourth proportional to 13,999.30, 21,008.55 and 6,213.70 is: 9,324.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.30 : 21,008.55 = 6,213.70 : x
  2. Step 2: Convert to fraction form
    13,999.30/21,008.55 = 6,213.70/x
  3. Step 3: Cross multiply
    13,999.30x = 21,008.55 × 6,213.70
  4. Step 4: Simplify right side
    13,999.30x = 130,540,827.14
  5. Step 5: Solve for x
    x = 130,540,827.14/13,999.30
  6. Step 6: Final answer
    x = 9,324.81

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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.