Home / 20,768.06-31,163.33-9,672.07

Finding the Fourth Proportional to 20,768.06, 31,163.33 and 9,672.07

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Solution

The fourth proportional to 20,768.06, 31,163.33 and 9,672.07 is: 14,513.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.06 : 31,163.33 = 9,672.07 : x
  2. Step 2: Convert to fraction form
    20,768.06/31,163.33 = 9,672.07/x
  3. Step 3: Cross multiply
    20,768.06x = 31,163.33 × 9,672.07
  4. Step 4: Simplify right side
    20,768.06x = 301,413,909.19
  5. Step 5: Solve for x
    x = 301,413,909.19/20,768.06
  6. Step 6: Final answer
    x = 14,513.34

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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.