Home / 31,905.93-47,861.33-9,721.20

Finding the Fourth Proportional to 31,905.93, 47,861.33 and 9,721.20

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Solution

The fourth proportional to 31,905.93, 47,861.33 and 9,721.20 is: 14,582.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,905.93 : 47,861.33 = 9,721.20 : x
  2. Step 2: Convert to fraction form
    31,905.93/47,861.33 = 9,721.20/x
  3. Step 3: Cross multiply
    31,905.93x = 47,861.33 × 9,721.20
  4. Step 4: Simplify right side
    31,905.93x = 465,269,512.59
  5. Step 5: Solve for x
    x = 465,269,512.59/31,905.93
  6. Step 6: Final answer
    x = 14,582.54

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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.