Home / 21,247.86-31,871.43-7,396.50

Finding the Fourth Proportional to 21,247.86, 31,871.43 and 7,396.50

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Solution

The fourth proportional to 21,247.86, 31,871.43 and 7,396.50 is: 11,094.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.86 : 31,871.43 = 7,396.50 : x
  2. Step 2: Convert to fraction form
    21,247.86/31,871.43 = 7,396.50/x
  3. Step 3: Cross multiply
    21,247.86x = 31,871.43 × 7,396.50
  4. Step 4: Simplify right side
    21,247.86x = 235,737,032.00
  5. Step 5: Solve for x
    x = 235,737,032.00/21,247.86
  6. Step 6: Final answer
    x = 11,094.62

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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.