Home / 12,790.31-17,644.37-11,018.84

Finding the Fourth Proportional to 12,790.31, 17,644.37 and 11,018.84

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Solution

The fourth proportional to 12,790.31, 17,644.37 and 11,018.84 is: 15,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.31 : 17,644.37 = 11,018.84 : x
  2. Step 2: Convert to fraction form
    12,790.31/17,644.37 = 11,018.84/x
  3. Step 3: Cross multiply
    12,790.31x = 17,644.37 × 11,018.84
  4. Step 4: Simplify right side
    12,790.31x = 194,420,346.61
  5. Step 5: Solve for x
    x = 194,420,346.61/12,790.31
  6. Step 6: Final answer
    x = 15,200.60

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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.