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Finding the Fourth Proportional to 29,989.55, 44,974.09 and 21,644.78

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Solution

The fourth proportional to 29,989.55, 44,974.09 and 21,644.78 is: 32,459.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,989.55 : 44,974.09 = 21,644.78 : x
  2. Step 2: Convert to fraction form
    29,989.55/44,974.09 = 21,644.78/x
  3. Step 3: Cross multiply
    29,989.55x = 44,974.09 × 21,644.78
  4. Step 4: Simplify right side
    29,989.55x = 973,454,423.24
  5. Step 5: Solve for x
    x = 973,454,423.24/29,989.55
  6. Step 6: Final answer
    x = 32,459.78

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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.