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Finding the Fourth Proportional to 12,772.60, 19,140.90 and 10,144.60

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Solution

The fourth proportional to 12,772.60, 19,140.90 and 10,144.60 is: 15,202.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,772.60 : 19,140.90 = 10,144.60 : x
  2. Step 2: Convert to fraction form
    12,772.60/19,140.90 = 10,144.60/x
  3. Step 3: Cross multiply
    12,772.60x = 19,140.90 × 10,144.60
  4. Step 4: Simplify right side
    12,772.60x = 194,176,774.14
  5. Step 5: Solve for x
    x = 194,176,774.14/12,772.60
  6. Step 6: Final answer
    x = 15,202.60

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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.