Home / 21,202.86-31,768.90-9,338.96

Finding the Fourth Proportional to 21,202.86, 31,768.90 and 9,338.96

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Solution

The fourth proportional to 21,202.86, 31,768.90 and 9,338.96 is: 13,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.86 : 31,768.90 = 9,338.96 : x
  2. Step 2: Convert to fraction form
    21,202.86/31,768.90 = 9,338.96/x
  3. Step 3: Cross multiply
    21,202.86x = 31,768.90 × 9,338.96
  4. Step 4: Simplify right side
    21,202.86x = 296,688,486.34
  5. Step 5: Solve for x
    x = 296,688,486.34/21,202.86
  6. Step 6: Final answer
    x = 13,992.85

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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.