Home / 20,879.94-31,312.14-9,035.43

Finding the Fourth Proportional to 20,879.94, 31,312.14 and 9,035.43

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Solution

The fourth proportional to 20,879.94, 31,312.14 and 9,035.43 is: 13,549.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879.94 : 31,312.14 = 9,035.43 : x
  2. Step 2: Convert to fraction form
    20,879.94/31,312.14 = 9,035.43/x
  3. Step 3: Cross multiply
    20,879.94x = 31,312.14 × 9,035.43
  4. Step 4: Simplify right side
    20,879.94x = 282,918,615.24
  5. Step 5: Solve for x
    x = 282,918,615.24/20,879.94
  6. Step 6: Final answer
    x = 13,549.78

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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.