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Finding the Fourth Proportional to 14,012.10, 20,999.70 and 10,296.90

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Solution

The fourth proportional to 14,012.10, 20,999.70 and 10,296.90 is: 15,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,012.10 : 20,999.70 = 10,296.90 : x
  2. Step 2: Convert to fraction form
    14,012.10/20,999.70 = 10,296.90/x
  3. Step 3: Cross multiply
    14,012.10x = 20,999.70 × 10,296.90
  4. Step 4: Simplify right side
    14,012.10x = 216,231,810.93
  5. Step 5: Solve for x
    x = 216,231,810.93/14,012.10
  6. Step 6: Final answer
    x = 15,431.79

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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.