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Finding the Fourth Proportional to 12,415.72, 17,134.02 and 6,750.85

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Solution

The fourth proportional to 12,415.72, 17,134.02 and 6,750.85 is: 9,316.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.72 : 17,134.02 = 6,750.85 : x
  2. Step 2: Convert to fraction form
    12,415.72/17,134.02 = 6,750.85/x
  3. Step 3: Cross multiply
    12,415.72x = 17,134.02 × 6,750.85
  4. Step 4: Simplify right side
    12,415.72x = 115,669,113.25
  5. Step 5: Solve for x
    x = 115,669,113.25/12,415.72
  6. Step 6: Final answer
    x = 9,316.35

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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.