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Finding the Fourth Proportional to 12,848.60, 19,272.90 and 6,287.60

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Solution

The fourth proportional to 12,848.60, 19,272.90 and 6,287.60 is: 9,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,848.60 : 19,272.90 = 6,287.60 : x
  2. Step 2: Convert to fraction form
    12,848.60/19,272.90 = 6,287.60/x
  3. Step 3: Cross multiply
    12,848.60x = 19,272.90 × 6,287.60
  4. Step 4: Simplify right side
    12,848.60x = 121,180,286.04
  5. Step 5: Solve for x
    x = 121,180,286.04/12,848.60
  6. Step 6: Final answer
    x = 9,431.40

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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.