Home / 20,887.10-31,333.78-7,563.22

Finding the Fourth Proportional to 20,887.10, 31,333.78 and 7,563.22

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Solution

The fourth proportional to 20,887.10, 31,333.78 and 7,563.22 is: 11,345.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.10 : 31,333.78 = 7,563.22 : x
  2. Step 2: Convert to fraction form
    20,887.10/31,333.78 = 7,563.22/x
  3. Step 3: Cross multiply
    20,887.10x = 31,333.78 × 7,563.22
  4. Step 4: Simplify right side
    20,887.10x = 236,984,202.69
  5. Step 5: Solve for x
    x = 236,984,202.69/20,887.10
  6. Step 6: Final answer
    x = 11,345.96

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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.