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Finding the Fourth Proportional to 22,523.80, 31,081.50 and 12,451.64

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Solution

The fourth proportional to 22,523.80, 31,081.50 and 12,451.64 is: 17,182.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,523.80 : 31,081.50 = 12,451.64 : x
  2. Step 2: Convert to fraction form
    22,523.80/31,081.50 = 12,451.64/x
  3. Step 3: Cross multiply
    22,523.80x = 31,081.50 × 12,451.64
  4. Step 4: Simplify right side
    22,523.80x = 387,015,648.66
  5. Step 5: Solve for x
    x = 387,015,648.66/22,523.80
  6. Step 6: Final answer
    x = 17,182.52

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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.