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Finding the Fourth Proportional to 16,912.40, 23,729.20 and 16,912.40

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Solution

The fourth proportional to 16,912.40, 23,729.20 and 16,912.40 is: 23,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,912.40 : 23,729.20 = 16,912.40 : x
  2. Step 2: Convert to fraction form
    16,912.40/23,729.20 = 16,912.40/x
  3. Step 3: Cross multiply
    16,912.40x = 23,729.20 × 16,912.40
  4. Step 4: Simplify right side
    16,912.40x = 401,317,722.08
  5. Step 5: Solve for x
    x = 401,317,722.08/16,912.40
  6. Step 6: Final answer
    x = 23,729.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.