Home / 21,997.38-30,356.61-11,925.84

Finding the Fourth Proportional to 21,997.38, 30,356.61 and 11,925.84

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Solution

The fourth proportional to 21,997.38, 30,356.61 and 11,925.84 is: 16,457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.38 : 30,356.61 = 11,925.84 : x
  2. Step 2: Convert to fraction form
    21,997.38/30,356.61 = 11,925.84/x
  3. Step 3: Cross multiply
    21,997.38x = 30,356.61 × 11,925.84
  4. Step 4: Simplify right side
    21,997.38x = 362,028,073.80
  5. Step 5: Solve for x
    x = 362,028,073.80/21,997.38
  6. Step 6: Final answer
    x = 16,457.78

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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.