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Finding the Fourth Proportional to 13,204.40, 19,817.40 and 12,772.40

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Solution

The fourth proportional to 13,204.40, 19,817.40 and 12,772.40 is: 19,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.40 : 19,817.40 = 12,772.40 : x
  2. Step 2: Convert to fraction form
    13,204.40/19,817.40 = 12,772.40/x
  3. Step 3: Cross multiply
    13,204.40x = 19,817.40 × 12,772.40
  4. Step 4: Simplify right side
    13,204.40x = 253,115,759.76
  5. Step 5: Solve for x
    x = 253,115,759.76/13,204.40
  6. Step 6: Final answer
    x = 19,169.05

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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.