Home / 21,061.86-31,584.01-8,573.43

Finding the Fourth Proportional to 21,061.86, 31,584.01 and 8,573.43

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Solution

The fourth proportional to 21,061.86, 31,584.01 and 8,573.43 is: 12,856.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061.86 : 31,584.01 = 8,573.43 : x
  2. Step 2: Convert to fraction form
    21,061.86/31,584.01 = 8,573.43/x
  3. Step 3: Cross multiply
    21,061.86x = 31,584.01 × 8,573.43
  4. Step 4: Simplify right side
    21,061.86x = 270,783,298.85
  5. Step 5: Solve for x
    x = 270,783,298.85/21,061.86
  6. Step 6: Final answer
    x = 12,856.57

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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.