Home / 22,049.84-30,429.28-11,978.64

Finding the Fourth Proportional to 22,049.84, 30,429.28 and 11,978.64

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Solution

The fourth proportional to 22,049.84, 30,429.28 and 11,978.64 is: 16,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,049.84 : 30,429.28 = 11,978.64 : x
  2. Step 2: Convert to fraction form
    22,049.84/30,429.28 = 11,978.64/x
  3. Step 3: Cross multiply
    22,049.84x = 30,429.28 × 11,978.64
  4. Step 4: Simplify right side
    22,049.84x = 364,501,390.58
  5. Step 5: Solve for x
    x = 364,501,390.58/22,049.84
  6. Step 6: Final answer
    x = 16,530.80

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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.