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Finding the Fourth Proportional to 12,567.88, 17,343.54 and 6,978.92

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Solution

The fourth proportional to 12,567.88, 17,343.54 and 6,978.92 is: 9,630.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,567.88 : 17,343.54 = 6,978.92 : x
  2. Step 2: Convert to fraction form
    12,567.88/17,343.54 = 6,978.92/x
  3. Step 3: Cross multiply
    12,567.88x = 17,343.54 × 6,978.92
  4. Step 4: Simplify right side
    12,567.88x = 121,039,178.18
  5. Step 5: Solve for x
    x = 121,039,178.18/12,567.88
  6. Step 6: Final answer
    x = 9,630.83

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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.