Home / 31,899.36-47,817.81-11,894.21

Finding the Fourth Proportional to 31,899.36, 47,817.81 and 11,894.21

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Solution

The fourth proportional to 31,899.36, 47,817.81 and 11,894.21 is: 17,829.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,899.36 : 47,817.81 = 11,894.21 : x
  2. Step 2: Convert to fraction form
    31,899.36/47,817.81 = 11,894.21/x
  3. Step 3: Cross multiply
    31,899.36x = 47,817.81 × 11,894.21
  4. Step 4: Simplify right side
    31,899.36x = 568,755,073.88
  5. Step 5: Solve for x
    x = 568,755,073.88/31,899.36
  6. Step 6: Final answer
    x = 17,829.67

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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.