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Finding the Fourth Proportional to 12,567.96, 17,343.48 and 6,978.96

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Solution

The fourth proportional to 12,567.96, 17,343.48 and 6,978.96 is: 9,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,567.96 : 17,343.48 = 6,978.96 : x
  2. Step 2: Convert to fraction form
    12,567.96/17,343.48 = 6,978.96/x
  3. Step 3: Cross multiply
    12,567.96x = 17,343.48 × 6,978.96
  4. Step 4: Simplify right side
    12,567.96x = 121,039,453.18
  5. Step 5: Solve for x
    x = 121,039,453.18/12,567.96
  6. Step 6: Final answer
    x = 9,630.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.