Home / 20,889.74-31,346.91-9,796.52

Finding the Fourth Proportional to 20,889.74, 31,346.91 and 9,796.52

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Solution

The fourth proportional to 20,889.74, 31,346.91 and 9,796.52 is: 14,700.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.74 : 31,346.91 = 9,796.52 : x
  2. Step 2: Convert to fraction form
    20,889.74/31,346.91 = 9,796.52/x
  3. Step 3: Cross multiply
    20,889.74x = 31,346.91 × 9,796.52
  4. Step 4: Simplify right side
    20,889.74x = 307,090,474.02
  5. Step 5: Solve for x
    x = 307,090,474.02/20,889.74
  6. Step 6: Final answer
    x = 14,700.54

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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.