Home / 31,701.76-47,553.18-11,989.60

Finding the Fourth Proportional to 31,701.76, 47,553.18 and 11,989.60

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Solution

The fourth proportional to 31,701.76, 47,553.18 and 11,989.60 is: 17,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,701.76 : 47,553.18 = 11,989.60 : x
  2. Step 2: Convert to fraction form
    31,701.76/47,553.18 = 11,989.60/x
  3. Step 3: Cross multiply
    31,701.76x = 47,553.18 × 11,989.60
  4. Step 4: Simplify right side
    31,701.76x = 570,143,606.93
  5. Step 5: Solve for x
    x = 570,143,606.93/31,701.76
  6. Step 6: Final answer
    x = 17,984.60

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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.