Home / 11,720.28-16,172.46-7,003.56

Finding the Fourth Proportional to 11,720.28, 16,172.46 and 7,003.56

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Solution

The fourth proportional to 11,720.28, 16,172.46 and 7,003.56 is: 9,664.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.28 : 16,172.46 = 7,003.56 : x
  2. Step 2: Convert to fraction form
    11,720.28/16,172.46 = 7,003.56/x
  3. Step 3: Cross multiply
    11,720.28x = 16,172.46 × 7,003.56
  4. Step 4: Simplify right side
    11,720.28x = 113,264,793.96
  5. Step 5: Solve for x
    x = 113,264,793.96/11,720.28
  6. Step 6: Final answer
    x = 9,664.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.