Home / 22,910.88-31,618.80-12,840.26

Finding the Fourth Proportional to 22,910.88, 31,618.80 and 12,840.26

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Solution

The fourth proportional to 22,910.88, 31,618.80 and 12,840.26 is: 17,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,910.88 : 31,618.80 = 12,840.26 : x
  2. Step 2: Convert to fraction form
    22,910.88/31,618.80 = 12,840.26/x
  3. Step 3: Cross multiply
    22,910.88x = 31,618.80 × 12,840.26
  4. Step 4: Simplify right side
    22,910.88x = 405,993,454.79
  5. Step 5: Solve for x
    x = 405,993,454.79/22,910.88
  6. Step 6: Final answer
    x = 17,720.55

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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.