Home / 12,635.79-17,442.99-8,161.72

Finding the Fourth Proportional to 12,635.79, 17,442.99 and 8,161.72

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Solution

The fourth proportional to 12,635.79, 17,442.99 and 8,161.72 is: 11,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.79 : 17,442.99 = 8,161.72 : x
  2. Step 2: Convert to fraction form
    12,635.79/17,442.99 = 8,161.72/x
  3. Step 3: Cross multiply
    12,635.79x = 17,442.99 × 8,161.72
  4. Step 4: Simplify right side
    12,635.79x = 142,364,864.35
  5. Step 5: Solve for x
    x = 142,364,864.35/12,635.79
  6. Step 6: Final answer
    x = 11,266.80

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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.