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Finding the Fourth Proportional to 12,926.64, 19,355.12 and 6,757.68

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Solution

The fourth proportional to 12,926.64, 19,355.12 and 6,757.68 is: 10,118.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,926.64 : 19,355.12 = 6,757.68 : x
  2. Step 2: Convert to fraction form
    12,926.64/19,355.12 = 6,757.68/x
  3. Step 3: Cross multiply
    12,926.64x = 19,355.12 × 6,757.68
  4. Step 4: Simplify right side
    12,926.64x = 130,795,707.32
  5. Step 5: Solve for x
    x = 130,795,707.32/12,926.64
  6. Step 6: Final answer
    x = 10,118.31

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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.