Home / 21,292.67-31,942.86-8,805.92

Finding the Fourth Proportional to 21,292.67, 31,942.86 and 8,805.92

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Solution

The fourth proportional to 21,292.67, 31,942.86 and 8,805.92 is: 13,210.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.67 : 31,942.86 = 8,805.92 : x
  2. Step 2: Convert to fraction form
    21,292.67/31,942.86 = 8,805.92/x
  3. Step 3: Cross multiply
    21,292.67x = 31,942.86 × 8,805.92
  4. Step 4: Simplify right side
    21,292.67x = 281,286,269.73
  5. Step 5: Solve for x
    x = 281,286,269.73/21,292.67
  6. Step 6: Final answer
    x = 13,210.47

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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.