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Finding the Fourth Proportional to 29,086.80, 43,522.20 and 21,310.80

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Solution

The fourth proportional to 29,086.80, 43,522.20 and 21,310.80 is: 31,887.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,086.80 : 43,522.20 = 21,310.80 : x
  2. Step 2: Convert to fraction form
    29,086.80/43,522.20 = 21,310.80/x
  3. Step 3: Cross multiply
    29,086.80x = 43,522.20 × 21,310.80
  4. Step 4: Simplify right side
    29,086.80x = 927,492,899.76
  5. Step 5: Solve for x
    x = 927,492,899.76/29,086.80
  6. Step 6: Final answer
    x = 31,887.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.