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Finding the Fourth Proportional to 31,372.67, 47,059.00 and 7,999.10

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Solution

The fourth proportional to 31,372.67, 47,059.00 and 7,999.10 is: 11,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.67 : 47,059.00 = 7,999.10 : x
  2. Step 2: Convert to fraction form
    31,372.67/47,059.00 = 7,999.10/x
  3. Step 3: Cross multiply
    31,372.67x = 47,059.00 × 7,999.10
  4. Step 4: Simplify right side
    31,372.67x = 376,429,744.55
  5. Step 5: Solve for x
    x = 376,429,744.55/31,372.67
  6. Step 6: Final answer
    x = 11,998.65

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1.5x scale

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.