Home / 16,971.30-23,420.34-9,418.78

Finding the Fourth Proportional to 16,971.30, 23,420.34 and 9,418.78

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Solution

The fourth proportional to 16,971.30, 23,420.34 and 9,418.78 is: 12,997.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,971.30 : 23,420.34 = 9,418.78 : x
  2. Step 2: Convert to fraction form
    16,971.30/23,420.34 = 9,418.78/x
  3. Step 3: Cross multiply
    16,971.30x = 23,420.34 × 9,418.78
  4. Step 4: Simplify right side
    16,971.30x = 220,591,029.99
  5. Step 5: Solve for x
    x = 220,591,029.99/16,971.30
  6. Step 6: Final answer
    x = 12,997.89

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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.