Home / 21,292.42-31,942.48-8,805.67

Finding the Fourth Proportional to 21,292.42, 31,942.48 and 8,805.67

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Solution

The fourth proportional to 21,292.42, 31,942.48 and 8,805.67 is: 13,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.42 : 31,942.48 = 8,805.67 : x
  2. Step 2: Convert to fraction form
    21,292.42/31,942.48 = 8,805.67/x
  3. Step 3: Cross multiply
    21,292.42x = 31,942.48 × 8,805.67
  4. Step 4: Simplify right side
    21,292.42x = 281,274,937.86
  5. Step 5: Solve for x
    x = 281,274,937.86/21,292.42
  6. Step 6: Final answer
    x = 13,210.10

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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.