Home / 22,910.30-31,616.60-12,840.99

Finding the Fourth Proportional to 22,910.30, 31,616.60 and 12,840.99

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Solution

The fourth proportional to 22,910.30, 31,616.60 and 12,840.99 is: 17,720.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,910.30 : 31,616.60 = 12,840.99 : x
  2. Step 2: Convert to fraction form
    22,910.30/31,616.60 = 12,840.99/x
  3. Step 3: Cross multiply
    22,910.30x = 31,616.60 × 12,840.99
  4. Step 4: Simplify right side
    22,910.30x = 405,988,261.67
  5. Step 5: Solve for x
    x = 405,988,261.67/22,910.30
  6. Step 6: Final answer
    x = 17,720.78

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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.