Home / 34,431.72-47,511.96-21,006.60

Finding the Fourth Proportional to 34,431.72, 47,511.96 and 21,006.60

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Solution

The fourth proportional to 34,431.72, 47,511.96 and 21,006.60 is: 28,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,431.72 : 47,511.96 = 21,006.60 : x
  2. Step 2: Convert to fraction form
    34,431.72/47,511.96 = 21,006.60/x
  3. Step 3: Cross multiply
    34,431.72x = 47,511.96 × 21,006.60
  4. Step 4: Simplify right side
    34,431.72x = 998,064,738.94
  5. Step 5: Solve for x
    x = 998,064,738.94/34,431.72
  6. Step 6: Final answer
    x = 28,986.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.