Home / 12,384.06-17,083.08-8,135.79

Finding the Fourth Proportional to 12,384.06, 17,083.08 and 8,135.79

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Solution

The fourth proportional to 12,384.06, 17,083.08 and 8,135.79 is: 11,222.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384.06 : 17,083.08 = 8,135.79 : x
  2. Step 2: Convert to fraction form
    12,384.06/17,083.08 = 8,135.79/x
  3. Step 3: Cross multiply
    12,384.06x = 17,083.08 × 8,135.79
  4. Step 4: Simplify right side
    12,384.06x = 138,984,351.43
  5. Step 5: Solve for x
    x = 138,984,351.43/12,384.06
  6. Step 6: Final answer
    x = 11,222.84

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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.